What is Power Over Ethernet?
Power Over Ethernet
PoE, allows you to send both power and data using a single Ethernet cable. The technology was originally designed for IP cameras. However, this technology has since been adopted by a growing number of phones, tablets, and other mobile devices. Many newer routers can use PoE as well. What’s required?
Your router and the device you want to power both require a compatible PoE circuit. For instance, some IP cameras come with their own AC adapter, but not all do. Similarly, your older USB hub might work with your phone or tablet without any trouble. So long as it can output at least 7.5 watts and provides power on the right pins. here’s how it works.
How does it work?
Routers that can use PoE usually have four ports. One or more ports are designated as “PoE-capable” and support the DC power required to run the device. The other ports provide data. If you want to bring power over Ethernet cables. 1st make sure your router has one of these ports; they’re usually labelled.
Once you’ve plugged your router into a PoE-capable port on the switch. All you need to do is plug an Ethernet cable into the “Data” port of the Power over Ethernet injector. Then connect it to one of your devices. You’ll know this has worked if both ends light up when the “Data” side is plugged in.
Your device will be powered by the Power over Ethernet injector. This works in much the same way as a normal plug adaptor you’d use in your home. Only instead of converting AC power to DC power it converts Ethernet data into DC power. If there’s no PoE-capable port on your router, you can always look for a Power over Ethernet switch instead.
Why you should use Power Over Ethernet (PoE)
For many years, IP cameras relied on traditional AC power to operate. As long as an outlet was nearby, this wasn’t a problem. However, it made installation more difficult. PoE switches provide power over the same Ethernet cable that’s used to send data back and forth between devices. Letting you easily place your IP cameras wherever you want without worrying about power outlets. In addition, fewer cables are also nice if you have a security camera system installed in your home or business.
The other major benefit to PoE is how much simpler it makes things if you want to install multiple cameras. Instead of running dedicated power cables back to a central location, you can just run a single Ethernet cable from the PoE Injector/Switch to your router and then distribute that signal via network cables. As a result, you’ll save time and money, as well as reducing the risk of someone damaging those AC power cables by accident.
What about Ethernet cables?
You’ll need a special Ethernet cable to use PoE. It’s not as simple as grabbing any old cord off the rack. Standard Ethernet cables have eight wires that your router separates into four pairs of “data” wires. But PoE cables have four additional wires, so they can provide both power and data. Make sure your cord contains these extra pins.
What is a PoE Extender?
The PoE Extender is used to extend the routing distance between the power supply and the device receiving power. It does this by using electrical isolation techniques, which let you extend your Ethernet cables up to 1,000 metres (3280ft) in length — without any additional loss of quality. There are two types of PoE Extenders: Active and Passive.
The active device has an Ethernet cable that runs back to the source, allowing it to function even when there’s no electrical isolation. The passive device does not have this feature, so it must be plugged into a source of power before operation is possible — making these devices most suitable for permanent installations.
What is PoE Splitter?
PoE splitters are used to divide the power supplied over the Ethernet cables between multiple devices, allowing parts of main electrical power supply to be shared by many IP cameras or other network-connected devices. A typical PoE splitter will take a single power feed, and redirect some of that power to the Ethernet cables, while passing the rest on to other PoE capable devices.
PoE Splitters are commonly used to support large numbers of IP cameras in places where powering them all with an AC adapter would be difficult — for instance, if there’s no easy way to run new wiring into the room, or if there are too many cameras for an AC adapter to conveniently reach.
What is a PoE Injector?
A power over Ethernet Injector is a device designed to provide power and data in one cable. This allows the installation of IP Cameras in remote locations, without having to install an AC power supply nearby. A PoE Injector is used to send power and data over an ethernet cable.
What is a PoE Repeater?
A power over Ethernet repeater is an electronic device that allows network connection to travel much further. It functions similarly to the way in which a normal router does, but with one important difference: it has an additional amplifier circuit designed to boost the electrical signals passing through it. This means you can see your video feed, even if you’ve got an extremely long cable run.
What is PoE Micro-splitter?
PoE Micro-spitters are used for splitting power supply over Ethernet cables between multiple devices with small power requirements (5W or under). It can provide power to two devices.
What about Power Over Ethernet Splitter?
PoE splitter provides the same functionality as a PoE injector, but in a single compact unit. A typical power supply can be split into two equal parts – one for the data connections, and one for the power supply. PoE splitters are commonly used in small data centres, where only a few IP cameras need to be installed on any given network, but do not have convenient access to an AC power source.
What is PoE Splitter Filter?
A power over Ethernet filter cable will prevent certain types of data from travelling down the cable, while allowing other signals to keep passing through. This can be useful when you’ve got a single cable that needs to carry both video and control signals at once, because it prevents interference between the two types of traffic. This can significantly improve video quality, because any interference will only affect the control signals, and not the video feed.
