Poe injector will change the mode of network equipment power supply, have obvious advantages:
1 POE is simple to install and save space, but also can be free to move the device.
2 cost savings. Does not require expensive power, saving the cost and time.
3 easy to control and detect.
4 POE injector terminal equipment will only be required to supply power supply, to avoid the risk of leakage of the line.