Long Distance Network and Power Extension with PoE System

As we know, set up IP camera system to improve security safety, a good network is the premise. Many applications require the installation of IP Cameras that are beyond 100 meters away from the closest monitoring center (e.g. networked Ethernet switch). In this case, network signal and supplying power would become too weak for remote IP devices working well 24/7,because Ethernet cable has a transmission limitation of 100 meters. The solution to deal with this issue is to extend network and power. Power over Ethernet (PoE) is the most common solution.

The starting point of Power over Ethernet technology is that small network devices such as VoIP phones, wireless access points, and IP cameras which can obtain power and data directly from the Ethernet cable, and there is no need to separately lay power lines, simplifing system wiring and reducing the construction cost of network infrastructure.

There are some advantages to choose PoE solution for network and power extension. PoE technology simplifies cabling and saves labor costs. Ethernet cable simultaneously transmits data and power. PoE eliminates the need for expensive power and its installation time, saving money and time. Users can safely and conveniently integrate the existing PoE of non-PoE devices on the network, which can coexist with existing Ethernet cables. The PoE power system is running under DC48V which is perfectly safe for human being.

Depending on your environment and application, there are two methods to extend your Ethernet network beyond the nearest monitor center.

1.Extension over copper cabling with PoE extender

When you’re connecting your IP cameras to workstations in a building, PoE extender is handy devices.

PoE extender is a kind of device which is used to extend the distance of cable in order to repeat data and power to powered devices. In this way, the distance of powering the IP camera is in a maximum of 500 meters by utilizing daisy chain set-up, that is you can use up to 4 units of extender to deal with long distance power supply issue. It is flexible to meet the demands of different distance.

Before using extenders, you should know your IP devices with how much power consumption. As the extenders comply with different standards, their output power will be different. Figuring out this point is important to choose a suitable PoE extender. What’s more, number of required interfaces, and rate (10/100/1000M) also should be considered.



Here we take two most common types of PoE extender as example.

  • IEEE802.3af PoE extender

IEEE802.3af does not exceed 15.4W at maximum. Due to the loss of transmission wires, it can supply power to devices with a maximum power consumption of less than 12.95W. It is sufficient for general IP cameras, but for high-power front-end equipment such as PTZ camera, the output power is not up to standard.

A PoE extender that complies with the IEEE802.3at standard can supply power to devices with a maximum power consumption of less than 25.5W. The PoE extender is ideal for applications include parking systems, video surveillance, tank monitoring and connecting power sub meters.

If you want to install more than one IP camera, you can add a PoE powered switch in the system to expand network conveniently. However, when multiple ports of the POE passthrough switch are powered at the same time, it is necessary to calculate whether the power enough to supports the front-end IP devices. If not, the backup power supply needs to be added to increase the power supply of the switch. Therefore, choosing the passthroug switch, you should make clear how many devices can be powered up. Total power budge is an important indicator of a PoE switch.

The network monitoring project is different from ordinary network integrated wiring. It is a large volume of data transmission with high power, which requires 24/7 uninterrupted work. The use of qualified PoE devices and cables is the guarantee of the stability of the whole system.

2. Extension over fiber optic cable with media converters

When connecting to a distant department, a building across campus or across town where too far for common PoE extender to satisfy. Fiber optich cable is an effective long distance network extension solution. Besides, fiber optic is a rather secure option. It is generally used with a pair of media converter. As we know, fiber optical cable does not deliver power, and media converter can transport fiber optic to eletronic signal, and vice versa. Usually, there are two terminal ports with a converter——RJ45 and SFP fiber port. Like convenient Ethernet ports, RJ45 is linked to security IP camera or main network. The fiber cable distance between the camera and the main network can be up to 80km.


There are also other new products that integrate media converter in their interface. Fiber PoE extender is one can also link fiber cable. And the fiber PoE extender can be installed in the front-end with a PSU that can be placed far away from the IP cameras. Therefore, it’s no need to worry about the power issue. The maximum distance between the power supply and the camera is up to 2.5km.

Besides, outdoor environment could be harsh, especially in hot summer day. So all the media converters, SFP modules and the extenders need to bear the wide temperature range. The industrial hardened grade products will be used for this outdoor application.

If there are several security IP cameras gather around in the area that you need to moniter, fiber PoE switch is a convenient good choice. The fiber PoE switch has mulitple PoE ports which can take in more than one security IP cameras, supplying both data and power over Ethernet cable. Instead of wiring each fiber optical cable to each security IP cameras, one fiber link is enough between the media converter and the fiber PoE switch. The connectivity between the fiber PoE switch and the camera stays with convenient Ethernet cable. In addition, this fiber PoE switch is well suit for industail environment, because it features industail grade design.

The information above shows the ways for IP camera long distance network and power extension. Hope can help you to deal with the issue in a suitable way.


Extend network between two building – both copper and fiber optical

Long distance network transmission always confuses us. As we know, network signal transmission is limited by copper material. If using cropper cable to transmit network over 100 meters, the signal would become too weak to support devices working.

With convenient network, we are able to set up IP camera system to improve security safety. In the case of building A to building B, backyard to garage, warehouse to home, firstly it should have network connectivity there. In some situation, we may have to consider the power as well. Electronic equipments such as IP cameras, access point VoIP, not only need data but also power. In order to guarantee the devices working well 24/7, reliable and convenient network with power system are very essential.

The article would show 3 ways to extend network from one place to another. If you want to extend network between 100-500 meters, the first solution is right choice to go. If longer distance is required, like home to farms, the last 2 ways has provided some useful ideas.

  • Long distance up to 500 meters.

In this way, we can use PoE products to extend network up to 500 meters. It allows us to extend network distance like home to backyard warehouse.

 Equipment needed:

1. PoE switch

2. PoE extenders

3. Cat5e cables

You may confuse what is PoE and how it helps to extend network? PoE, power over Ethernet, is a technology that transports data and power over single Ethernet cable. That’s mean we do not need to prepare extra power adaptor which will reduce cables and simplify installation.

How it works? PoE switch transports data and power to front-end IP devices. It always has power source equipment such as PoE switch or PoE injector at back-end. These PoE switch or injector will send the power and data to the extender, the PoE extender catch it and boost up for next 100 meters. 4 units PoE extenders link together with daisy chain setup can provide totally 500 meters PoE network.

Firstly, we need one PoE switch port to connect to PoE extender. Now the PoE extender gets data and power which will transport both of them to IP device or next PoE extender with Cat5e/cat6 cables.

If we need to expand RJ45 ports at the front end, we can use pass through PoE switch. Similar as PoE extender, pass through PoE switch is powered by a PoE injector at back-end, and create multiple PoE ports for remote ip devices. As the latest IEEE802.3bt standard is employed, the pass through PoE switchsupply total power budget up to 71W.

  • Long distance up to 80KM (Power from front-end)

Equipment needed:

1. PoE switch

2. Fiber cable

3. Media converter

4 .Ethernet cables

If the power source is available at the front end, what we need is the media converter to set up the fiber link network. The advantage of fiber optical cable is fast speed, low latency and long distance. It is basically the light transmission in the fiber cable. The fiber optical signal will be converted back to electronic signal and go through Ethernet cable after media converter.

Firstly, install SFP modules on PoE switch and media converter. If PoE switch has SFP slot, it saves one media converter. Otherwise, two media converters are needed at two building. The network system needs a converter to transfer optic signal into electronic signal.

Now use fiber line to link SFP and another media converter.

Finally we can connect the two building with fiber optical cable.

In addition, if we want to use media converter to back up multiple IP devices, we can connect the media converter to network switch. The switch would get data from converter and support data to multiple IP devices.

  • Long distance up to 2.5km(Power from back-end)

This connection way is to solve the issue while the power source is difficult to acquire at front end. As we know, fiber optical cable does not deliver power and electronic devices need power to supply it work. In this way, building A would like to offer power as well as data.

Equipment needed:

1. Media converter

2. Fiber PoE extender.

3. Siamese fiber cable

Similar as above solution, it needs to set put fiber optical link between two buildings. The fiber optical can’t transport the power, however we can add one pair copper or Siamese fiber optical cable which has integrated copper cable to send the power in parallel. The voltage drop is the first issue for long distance power transmission. DC55-DC57V is properly voltage as it is safety to human being. After fiber PoE extender receives the power, it will boost up the voltage and regulate to DC48V output for front end PoE devices. Both non-PoE and PoE equipment can’t be connected to the fiber PoE extender at the other end. Constructed to voltage drop, the maximum meaningful PoE distance is 2500-3000 meters, the voltage will become too low to supply the PoE ip device, most of the power will be loss on the cable. The fiber PoE extender is convenient tool for long distance PoE network, where the network go, the power follow.

General speaking, if extends network from 2 building within 500 meter, user can choose PoE extender to repeater network. It is good choice for user to pick fiber solutions while extends network far from 2.5km. Click here and show Practical tips to improve your WiFi signal

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How to Power Long Distance Security IP Cameras

IP camera(Internet Protocol camera)is differ from analog CCTV camera. It is a type of digital video camera that receives data and send video stream via the Internet. The IP cameras are generally applied in the areas where security is needed, mainly used for surveillance purpose. There are various types of IP cameras including WiFi IP camera, wired IP camera, and webcams.

Today, we will talk about how to power long distance wired IP cameras. If the distance between the monitoring center (e.g. switch) and the deployment location is beyond 100 meter, supplying power could be an issue in such long distance. The power will sharp down as the distance increases to a certain extent, which results in the insufficient power voltage to supply the front end IP cameras.

There are several practical ways to deal with long distance power for security IP camera. If the AC power is presented closed to cameras, the power adaptor can provide the power to the camera. In this case, only the data transmission needs to be concerned. While the power is difficult to acquire, you will need to send the power from monitoring center or somewhere far from the cameras. Several ways can be employed to get the job done. The most common solution is the Power over Ethernet (PoE)

Firstly let’s understand what is PoE. PoE(Power over Ethernet) is a new technology that transmit data and power simultaneously along with a twisted ethernet cable for up to 100 meters. The power source equipment such as PoE switch or PoE injector will add the power to Ethernet cable and send to the remote IP camera. We have mentioned above, IP camera differ from analog CCTV camera, One of the advantages of IP camera is that it can be powered through the ethernet cable and operate without a dedicated power adapter. The PoE was developed according to TCP/IP network, the maximum distance is still 100 meters. In order to transmit the power and data beyond 100 meters, extra devices will be needed.

Majority of IP cameras require a central network video recorder (NVR) to handle the recording, video and alarm management. IP cameras encode and process the video data, then stream it to the NVR recorder which is used for storage and remote viewing. PoE NVR can be considered as a video recorder integrated with PoE switch, it can transmit data and power through one ethernet cable for 100 meters, plus the distance between PoE NVR and back-end switch, the total distance increase to 200 meters. What to do is to move the PoE NVR closed to the camera in order to obtain the extra distance. The downside of this solution is monitoring may need to move along with the NVR.

  • PoE extender

If moving the NVR is not possible, PoE extender is a handy tool. PoE extender is a kind of device which is used to extend the distance of cable in order to repeat data and power to powered devices. In this way, the distance of powering the IP camera is in a maximum of 500 meters by utilizing daisy chain set-up, that is you can use up to 4 units of extender to deal with long distance power supply issue. It is flexible to meet the demand of different distance. If the IP camera deploys at outdoor, some protective tools are better to be prepared. The cable needs tube to protect in the harsh environments and although there are waterproof extender, using a closure is a good protection for future maintaining, especially when it is buried under the ground in case of moisture. Cat5e and Cat6 cable are two types of Ethernet cable for common use. You are supposed to choose one with pure copper cable to avoid voltage drop problem.

  • Fiber PoE extender

If the distance is longer than 500 meters, or fast speed and low latency are required for your security IP cameras. The fiber optical is the right way to choose. Fiber optic cabling is an effective method to overcome the distance and bandwidth limitations of ethernet cable. What you need is one fiber PoE extender and two media converters deployed at two sides separately. These two devices allow you to set up the fiber link network. As the fiber optical simply employs the light to transport data, there is no way to add the power to fiber optical cable. The practical solution is that add a pair of copper conductors or use siamese fiber cable which has integrated copper cable to transmit the power in parallel. Now the power supply units can move to the back-end or far away from your camera. While choosing the right copper cable, the maximum power distance can reach 2.5km. As we mentioned, the voltage is always the number one issue for long distance power transmission. The power will convert to heat and lose inline. The well-designed fiber PoE extender can boost up the voltage to meet standard PoE requirement

While there are multiple IP cameras closed to an area, using fiber PoE extender may involve in higher cost, as each camera needs independent fiber link and fiber PoE extender. The hardened fiber PoE switch is capable of providing multiple PoE ports for the IP cameras. As the power consumption is larger for mulitple IP camera, the power supply units has to be closer to the hardened fiber PoE switch, because of voltage drop limitations. Unlike the single fiber PoE extender which can move PSU 2.5km behind, the PSU only can stay 800-500 meters far. As the Hardened fiber PoE switch supply standard IEEE802.3af/at PoE, there are still 100 meters extra copper distance between the switch to the cameras which means all the cameras around 100 meters can be gathered together to the hardened fiber PoE switch.

From the above information, you must have a well understanding of long distance power methods for IP camera. If you want to know more detail about IP camera power method, click here please.

Practical Tips to Improve your WiFi Signal

Confronting awful WiFi signal coverage is annoying right? When you are walking into the stairs, the WiFi suddenly disappeared. If you have tried the common solutions like upgrade firmware and play with antenna to improve your WiFi signal, but they didn’t make good result. Here are some practical tips to offer. First of all, let’s figure out what causes the poor WiFi connectivity.

The WiFi employs 2.4Ghz or 5.8Ghz to transmit the signal in the air which is easier to weaken by the obstructions such as the walls. One wall will weaken WiFi signal to 80%, and two walls will go down to 50% left. Some people think 5.8Ghz WiFi router can improve WiFi signal, which may not always true. If the WiFi is weaken by obstructions, the 5.8Ghz WiFi router only makes it worse. Although the 5.8Ghz WiFi router is capable of carrying higher volume data, meanwhile it compromises the penetrating capacity, which means its transmission distance is shorten than the 2.4Ghz WiFi router. An instinct way to bypass the obstructions is relocating the WiFi router. However, sometimes you will have no condition to move the router. Because WiFi router has to set closed to the network entrance. The first practical tip is that you can use a repeater to receive the WiFi signal from the main router and transmit forward to the destination. Look at the image below. There are 4 walls between the WiFi router and the bedroom which causes the dark zone. Now if we place a repeater at the living room will reduce the obstructions to 2 walls. The key is to find the path for the WiFi signal to bypass the obstructions, usually it is the L shape. The repeater should be placed at the turning point of the L.

There are two ways to repeat the WiFi signal. If you already have an old WiFi router in hand, now this is a chance to re-use it. What you should do is to connect your old router to the main router through WiFi. Actually it is not complicated as you think.

  • Re-use your Existed WiFi Router

Firstly, power up the old router and make the connection by using a laptop or Mobil phone, then login the router in the web browser. If you don’t remember the IP address or the login account, usually you can find the information at the bottom of the router. Find the reset button and depress for more than 10 seconds after the router is powered up. This operation can restore the factory setting which allows you to login with default account. In the Wifi setting page, you can see the WDS option unchecked. Mark the checkbox and it will present the network search option in the page. Use this search option to connect this router to your main WiFi network. There are two more steps to go through. Turn off the DHCP and change the IP address of this router in case that it may have IP conflict with your main router. Once you have done these setting properly, the WiFi router will work as WiFi repeater.

  • Pick WiFi Repeater

If you feel too much bother to tweak the setting in the router, you can simply buy a WiFi repeater. WiFi repeater (aka WiFi extender) works much similiar as your old router here. But the setting is simpler. The DHCP and IP address conflict issues are avoided by the default setting as the product is designed for WiFi repeating purpose. Simply plug the repeater to the AC outlet, it will create internal WiFi which allows you to access by using the mobile phone or tablet. After you login the repeater, you can connect the repeater to your main WiFi network, and the repeater will start forwarding the WiFi which works exactly the same as the above WiFi router.

  • Move Antenna Outside

The WiFi signal is being transmitted through the antenna. While there are thick walls that weaken the signal, move the antenna to another side to bypass the walls which could improve the WiFi signal. This solution doesn’t always work, because some of the WiFi signal could be consumed while transmitting along with the extension cable. It’s too weak for the remained signal to spread out. People mentioned to turn to high power antenna, I don’t recommend it, as the antenna needs to match the original power design of your router. Replace with high power antenna while the router can’t provide enough power which makes the case worse.

WiFi router and repeater try to bypass the obstructions by changing the direction. It only reduces the obstructions but not eliminates it. The seconds practical solution is to mix wire and WiFi connection. Use the wire cable to transmit network signal to the dark zones and create WiFi signal from there. There are several ways to make it.

  • Powerline Adaptor

The power line adaptor takes used or existed AC power line to transmit network data. The network signal is converted before being injected to the power line with adaptor and picked up at other AC outlet by another adaptor. After that, it will generate new WiFi signal. If you have WiFi birdhouse camera in the garden, it relies on the WiFi connectivity. Use the power line adaptor can easily extend the WiFi signal closed to the camera as long as the AC outlet is nearby. Two important things about the power line solution. The adaptor only works in the same electric meter. Both transmitter adaptor and receiver adaptor need to stay in the same meter. And the second thing is that power line requires qualification cables in the building. If the building is very old with poor cabling job, the power adaptor may have problem to transmit the data.

  • PoE WiFi access point

PoE WiFi access point receives network signal by using the Ethernet cable and generates new WiFi dignal in the field. The connection between PoE WiFi access point and the main router is cable link, which can provide reliable high speed up to 1000 gigabytes. Moreover, multiple WiFi access points can be deployed to improve the WiFi signal to coverage different areas. The advantages of PoE WiFi access point is both power and data can be transmitted to the access point by using signal Ethernet cable. Wherever the cable is, the power source follows. The power is added to cable at the router by using the PoE injector.

  • Long distance WiFi PoE extender

As we know that the cat5/cat6 cable connection is limited to 100 meters. If the WiFi signal needs to be extended over 100 meters, such as from the lake to the house, you may need the PoE extender to repeat the network signal. The PoE extender can repeat the network signal up to 500 meters. The PoE WiFi access point will be installed at the end of 500 meters and create the WiFi signal to cover the area. It’s of great convenience that the PoE extender doesn’t require power source closed to each repeater. The power is added to the cable inline by PoE injector. The power adaptors are eliminated in the daisy chain setup.

The last but not least, sometimes the poor WiFi is not caused by the obstructions, but jamed with neighbor’s WiFi, because there are too many WiFi working in the field. I saw people has more than 25 WiFi hot spots picking up in his phone, the WiFi signal is so craw so it gets jam. Sometimes you experience the poor WiFi connection occasionally such as at night or at weekend. Properly the WiFi is too crowded. People use WiFi more often in these time frames. You can simply check the WiFi hot spot with mobile phone. If in such case, except for bringing your WiFi more closely, you can switch the WiFi channel in your WiFi router to avoid the jam.

  • Channel switch

What is WiFi channel?

Think of the walkie-talkie which has different channels to communicate with each other. The WiFi router has around 13 channels, it is set to auto selection in default. What you can do is to login your WiFi router and manually switch the channel to test whether the situation improved. It is important to choose the moment to make the change when WiFi connectivity became worse. Only this moment you can know which channel is being jam. Reboot the router after you switch to new channel, your mobile device will make the WiFi connection to the new channel.

The above is the all the possible solutions that I offer for help. If you do have any new idea or all above tips still can’t improve your WiFi network, please leave a message in the comment section. Here is the article about how to set up home network with PoE switch.

DVR VS PoE NVR

DVR and NVR is the critical part of camera security system. People choose either DVR or NVR as recording equipment. This article would like to go through basic knowledge about what’s difference between DVR and NVR.

  • What is DVR?

DVR, digital video recorder, is kind of electronic device that records video in digital format and usually used with analog cameras. It digitalizes the analog video and saves to the hard disks as footage. Due to DVR only accepts analog signal, it couldn’t be connected to different type cameras but analog cameras. The connection way is point-to-point. Every camera needs two cables, one connects DVR and another connects to power source. It brings some limitations when security system needs to be upgraded.

  • What is PoE NVR? 

PoE NVR, is network video recorder integrated with PoE technology. As we know, NVR provides video storage as well as remotely viewing. In the IP camera system, the video is being encoded and processed at the ip cameras, NVR simply receive the Digitalize data, write to the hard drive and decode it before output to a monitor. In addition, NVR accept video stream from both wired or WiFi security cameras while DVR only works with wired analog video.

PoE allowing data and power are being transported over single cable after IP cameras is connected to PoE NVR, it doesn’t require extra power cord to supply the power. All you need just one cat5e cable connecting the cameras to PoE NVR.

The following are some major differences between DVR and PoE NVR.

  •      Video Signal

As mentioned above, DVR accepts analog signal while PoE NVR accepts IP video signal. The difference would affect image quality. IP camera provides HD videos and images, showing clearly faces, motions as well as the detail, which enhance security. The traditional analog couldn’t offer better image detail. However, the new analog camera system appears including AHD, TVT these years which can deliver HD video. It improves the image quality dramatically. Still the image detail are not good as IP camera comparing with same resolution, because the analog video transporting over cable will always involve in data loss.

  •      Connecting way

DVR requires cameras point-to-point connection directly with coaxial BNC cable. This cable does not deliver power or offer audio connections. Extra cable is needed for power source. As the analog video is pretty much the raw data, it is easier to get interference during the transporting. While the audio is needed, RCA connection has to be added.

PoE NVR uses one cable to supply the camera with data and power. The power adaptor or AC outlet are eliminated closed to each cameras. Furthermore, PoE provides the capacity to repeat the network connection up to 500M. Power line and WiFi offer the flexible way to connect IP cameras . No matter wired or WiFi cameras, PoE NVR can simply take them into the system.

  •      System upgrade

Unlike DVR, the PoE NVR or NVR doesn’t process the data. The data is being handled before transporting to NVR recorder. PoE IP camera system takes all the advantages of network technologies. It provides much more flexibility while setting up the surveillance system. For example, users want to expand the monitoring area and add more cameras to the field. This could be the headache for the DVR because the connection ports are fixed. The PoE NVR accepts the cameras either from the PoE port or the network. Even it doesn’t have extra ports for new cameras. Simply add PoE switch can expand the cameras connection easily. Click to learn more how to use external PoE switch to build ip camera system.

4 Factors Should Know Before Choosing PoE Cable

Ethernet Cable are being used to linked the different network devices. PoE (power over Ethernet), is a technology that can transport data and power over single Ethernet cable. PoE devices take the twisted pair in category cables to send the power. While buying PoE products, you may find IEEE802.3 standard always stand up. The IEEE 802.3 specifics how the power should transported in Ethernet cable and what is the maximum power budget. The IEEE802.3af supply 15.4 watts and IEEE802.3at (also name PoE+) supply 30 watts, which fit for lower power consumption devices like IP cameras, access points, VoIP. IEEE802.3 bt is the next generation PoE power which can offer 95 watts power . It benefits high power demanding equipments such as Televisions and interactive displays, Point of Sales (POS) and information kiosks. Therefore, different network devices may need different power and the suitable cable should be picked to match the requirements.

Considering 4 factors before picks the cable for PoE.

  •   Speed

There’re many cables with different speed on the market, including Cat3, Cat5, Cat6, Cat7 and so on.

From the table, it is clear to know cables’ speeds are different. Nowadays, most of home and business network have 100Mbps even 1000Mbps network. Cat5e should be the minimum choice today. If cables are being using in large computer communication or data transmission, Cat6 and Cat7 should be considered as well.

  •   Conductor Size and Material

As we know, conductor’s resistance brings bad effect on power transmissions. The electric currently pass through cable and convert to the heat because of the inline resistance. While the conductor size is small, the resistance is larger and the heat will be higher as well. Usually the cat6 and cat7 cable has the larger dimension than cat5 and cat4. If there is too much power loss cable inline, the remote powered devices may don’t have enough voltage to start up. Pick the bigger size conductor if possible.

Moreover, what made of the conductor does matter. Some manufacturers try to cut off cable costs by using copper-clad (or dipped) aluminum wires to replace pure copper core, which leads to higher resistance. It is going to accelerate the power loss inline. Check the cable’s material. It must be fit into the standard specification. Generally, pure copper is always the best.

  •   Plenum-Rated/Temperature

Other than the core of the cable, the outer skin needs to be checked. The plenum rated is relative to fire requirement. Check the fire code especially when the cables are been deployed to the public facilities such as Hospital, hotel, city hall. Air and water causes negative impact to cables in outdoor application. The cables are easy to get damage somehow while it is exposure directly. Choose the Cable with UV resistance can greatly reduce contact with air and provides better waterproof rate.

Common temperature ratings for cables are 60°C, 75°C and 90°C. If the temperature rises up in the environment, the electrical performance will become worse. Estimate the operating temperature before picking the cable.

  •   Installation

No matter what the cable category and construction structure, while large bundle of cable stick together, it will make heat accumulated which could cause safety issue. Be careful this could turn into problems while installing the cables in the dense place.

Cable speed, conductor size, material, plenum-rated, temperature and installation need to be overseen before choosing the cable. In addition, price is also a factor. If the cable are being selling too lower price, it may need to double confirm the quality. We mentioned the long distance power transport will make the voltage drop. Different voltage can be applied to power over Ethernet (PoE) cable.

 Click here show you Long distance IP Camera setup with PoE network extender.

Set up Home IP Camera System with Power over Ethernet

IP camera, also called Internet Protocol camera, is a digital video camera which captures image, compresses to video files and transmits it over network. The IP camera is widely applied in many places such as home, office building, warehouse and hotel. We will focus on setting up IP camera system at home.

More and more IP cameras are installed for safety these days. A IP camera usually put up at the front door in case of the burglary. According to a survey, about 34% burglars enter through the front door. When the valuable stuff is stolen, you may want to find out who is the murderer. If you have the suspect but no evidence to prove, no one even the police can help you. Backyard break-in can be prevented as well. So setting up a IP camera at the front door is quite essential. The backyard of house needs a IP camera. You may find something unexpected in your garden through the camera like the animal guest. Wildlife and plants can also be seen with the camera. Some cameras has night vision, enabling to monitor the garden even at night. If you have children, it is better to set a camera in the room or living room. The nanny camera is the covert camera which is hidden under the regular case such as smoke detector and PIR sensors. These cameras allow parents to monitor the activities of the children without their notices. It can avoid injuries effectively.

There are two ways to install IP camera at home, either using WiFi or wire connectivity. Be aware of the WiFi camera requires power. The power adaptor has to be presented closed to the camera to supply the DC power. The camera will be hooked up to the home WiFi network for remote viewing. One of the critical conditions is the WiFi coverage should be good enough at the installation spot. The camera takes significant bandwidth to stream the real time video online. The walls are always the obstacles which may block the WiFi signal. There are many ways to improve the WiFi if it is too bad in the field.

The second solution is to use wire IP camera system with power over Ethernet (PoE) technology. The PoE allows single Ethernet cable to transport data and power to the remote IP camera. The AC outlet is eliminated in each cameras. A home IP camera system can be done by yourself with Cat 5e or Cat 6 cable when PoE is employed. Moreover, the wire connection has better connectivity than WiFi. The PoE installation is plug and play. Just connecting the cameras to PoE products like PoE switch or PoE NVR with standard Ethernet cables, your camera system gets ready to work. The PoE technology needs no certificated electrician, so the cost is lower.

Several connection ways can be chosen to set up the IP cameras system. First way is to use PoE switch. It is the most direct and easiest way to power IP cameras. The cameras are connected to the RJ45 ports of the switch by using the Cat 5e/Cat 6 ethernet cable. If the camera is set up outdoors, the cable should be protected with plastic tube.

PoE NVR is the second choice. PoE NVR can be considered as a video recorder with PoE switch integrated. It simplifies the installation. All the cables will be wired back to the rear connection of PoE NVR.

If the network infrastructure is existed without PoE, a PoE injector can be added on to convert non-PoE products to PoE-supported. PoE injector and PoE spitter are two kind of devices to convert the PoE network.

The setup of home IP camera system becomes simple and easy with PoE technology. Find out the differences between PoE NVR and external PoE switch for IP camera system.

Best PoE switch for IP cameras

IP camera security system is a type of surveillance system which can transport video in real-time and record the footage to SD card or hard drive. It is common practice to set up the ip camera system by using a PoE switch. The PoE switch has integrated with PoE technology which allows both power and data to be transported through single Ethernet cable. The power adaptor doesn’t need present closed to the camera anymore. The PoE saves the installation cost and makes the setup easily. How to choose PoE switch? This article will go through the things you need to know before buying a PoE switch.

· Speed
There have 2 major kinds of PoE switch for ip camera system in the market, 100M and 1000M gigabit. Few 10G PoE switch are available as well. The speed is about how fast the data can be processed and transported between the devices. Actually, 100M PoE switch is good enough for IP cameras. The data rate of 8 megapixel camera is only about 20 Mbps per channel. Usually, there are uplink ports which will be connected to NVR or main network. It is better to have gigabits capacity on those ports, as all the data are gathering there. If the budget is not tight, pick the full Gigabit, but make not much difference. The 100M PoE switch can meet the bandwidth demands from ip cameras system for home or small-medium business.

· Power budget
Th PoE switch not only supply the network communicating but also the power to remote ip camera. While connecting all the cameras to PoE switch, it is necessary to confirm each of IP cameras has received enough power. The IEEE802.3 af/at specific the maximum power output in single port. IEEE802.af standard supply 12W and and IEEE802.3at (PoE+) supply 25.5W. The camera with infrared usually takes less than 12W. 25.5W will be enough for PTZ camera. However, it may need high power when heat is built in to the camera. The 95W IEEE802.3 bt standard products are ready now.

· Ports and SFP
Choosing different number ports of PoE switch depends on quantity of IP cameras in the system. It is always good to reserve some ports for future usage. There are 6, 8, 12, 24 ports on the market. You can expand the ports by adding new PoE switch. While one PoE switch is not enough for all the ip cameras, add a new switch and connect to the first one will increase the ports easily.

Some of the PoE switch has two empty slots next to the uplink port. It is the slot for SFP module. What is SFP? SFP, small form-factor Pluggable, is a compact, hot-pluggable optical module transceiver used for both telecommunication and data through fiber optical cable. The advantage of fiber optical is fast speed, low latency and long distance. With SFP, two switches can be linked together in several kilometers. The maximum fiber network distance is 80KM. If there is long distance between two switches, SFP fiber optical is the right solution to go. The maximum cable network distance is 100 meter. Even using network extender, it can be extended to 500 meters only.

· VLAN
VLAN is quit essential for IP cameras system. A virtual LAN (VLAN) isolates the RJ45 ports next to each other at the data link layer. Generally speaking, the camera connecting to the PoE ports can’t see each other with VLAN enable. They are blocked by the VLAN. All the PoE ports only have path to the uplink. It can guarantee the cameras operating independently without interference. If someone try to take advantage of one camera to get other, it can’t be done when VLAN is enable.

· Manageability
There are 3 types of PoE switch on the market, fully managed, smart managed and unmanaged. Both Fully managed and smart managed PoE switch allow users to adjust and control every port’s power and network traffic, VLAN etc. Smart managed PoE switch reserve the partial functions of fully managed, like visual smart managed PoE switch which has LCD display built in. The users can monitor all connecting status in real-time and configure switch by using button around the LCD screen.

Not only the PoE switch, but also PoE NVR can be used to set up IP camera system. Click to find out the differences between external PoE switch and PoE NVR in IP camera security system.

Using PoE System in Office Building

In the past, two cables were used to send power and data separately. Cabling becomes complex jobs when many devices need to be powered in the field. With the rise of PoE technology, it is possible to send power and data on the same Ethernet cable. This technology provides new network solution in commercial installation like office building.

What are the advantages of PoE?

Simplifying installation
The PoE combines two cables into single one which reduces about half of the cable in the system. As long as the Cat 5e or Cat 6 cable has been put up properly, the network devices are ready to be installed. The power is going through each Ethernet cable before reaching to the remote powered devices.

Saving Cost
As we mentioned below, what you need are the Ethernet cable, PoE switch and powered device. Simple plug and play helps to set up the network fast. If you choose to build commercial network without PoE support, a professional electrician is required to take care of the power line. The installation cost could be higher.

Flexibility
PoE is quite flexible, especially when the power source is absent in the field. Where the cable goes, the power source follows. The technology enables the transportation of power and data on single Ethernet cable. So powered device is not necessary to plug in the power outlet directly.

Manageability
It is easier to manage network system with PoE technology. The visual PoE switch . All the powered devices’ condition can be monitored with this kind of visual switch.

What application will use PoE in office building?

LED lights are one of them. LED light is a low voltage device, and usually it consumes 13-15 watts power. The standard PoE provides 15.4 watts of power. So a PoE injector which meets this standard can be used when power the LED light. Connecting LED lights to PoE device gives users access to manage smart lighting. LED lighting can be controlled through mobile devices like tablet or mobile phone.

Wireless access point (or WAP)is another network devices which can take advantage of PoE technology. Lack of WiFi coverage is inconvenient for everyone in the office. Adding access point will improve the WiFi signal coverage. Now single Ethernet cable can provide power and data to each access points. Repeating the WiFi signal becomes an easy job with PoE.

The PoE switch also helps setup of door access control with the next PoE system standard IEEE 802.3bt, which can output 95W power in single Ethernet cable. The door access control usually demands high power because of the door striking. The 95W PoE injector delivers enough power for most of the door control system. The standalone access control unit or reader can be linked to PoE switch to acquire both power and network. PoE solution simplifies the system design of access control system.

VoIP phone is a typical application in business. One Ethernet cable will be enough for each VoIP after PoE solution is employed. Uninterrupted power supply becomes possible as the power source is centralized in the PoE switch. People still can make call when the power is cut off in emergency.

There are many products form integrated with PoE technology click to find out what is new today?

DIY Power over Ethernet with Right Pinout

PoE (Power over Ethernet) allows single cable to transport both power and data to the remote IP devices. It benefits the application that power source is absent in the field. Where the cable goes, the power source follows.

The T568B and T568A are the two color codes used for wiring the RJ45 connector. Both of the standards work no difference for PoE pinout. The 12-36 pinout are taken for data in the fast network. It leaves 45-78 two spare pairs which can be used for power transporting. This is one way to send the power over Ethernet cable.

The typical products we can see taking 45-78 pinout for power is the passive PoE injector. The passive injector simply combines 45 twisted cable in one and 78 twisted as another. The low voltage power can be sent over these two combined twisted pair. The passive PoE injector doesn’t have any protection for the power so it is the primitive PoE solution. The voltage drop will turn into serious issues when the cable is longer than 20 meters.

The IEEE 802.3 active PoE injector also takes 45-78 for power. Instead of simply adding power to the twisted pair, the PoE injector has protection mechanism to guarantee the power is being sent to the right place. The PD signature has two steps to verify and classify whether the remote ip device is IEEE802.3 compliant products. Otherwise the injector will not release the power at all.

Now the PoE switch – (simliar as PoE injector) usually takes 12-36 data pair to send the power. You may confuse why the power can go over data pair. The network is moving to gigabit which needs all 4 twisted pair for data. There are no spare twisted pair in gigabit network. One of the components named network transformer can separate the power from the data easily. The 12-36 becomes preferred pinout in IEEE 802.3 standard products.

In the next generation PoE IEEE 802.3bt, all four twisted pairs are occupied to send the power as well as data. This new standard is capable of transporting 95W power over single Ethernet cables . It benefits for the high power demanding application such as cellular base stations, access control with door locks, televisions and interactive displays, Point of Sales (POS) and information kiosks, etc. The voltage drop is the issue needed to be taken care of no matter which pinout are taken to send the power. Click here to find out what voltage can be used in Power over Ethernet.

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