PoE is widely deployed to areas where access to Alternating Current (AC) power is inconvenient, expensive or infeasible to supply. PoE can power devices that are located in ceilings, on rooftops, light poles, along fences, pipelines, transit routes and other out-of-the-way locations. The cost of bringing electrical power to each device is eliminated by powering the equipment through the Unshielded Twisted Pair (UTP) cable. The benefits of PoE can be summarized as follow:
Cost Savings: No need to install power outlets and no need to hire licensed electricians.
Flexibility: Easily move devices to wherever a LAN cable can go and install devices where it is difficult to get power.
Simplicity: Install only Ethernet cable to the end device and minimize cable clutter and saves space.
Safety: No AC power is needed for outdoor applications and no need to meet electrical building codes.
Functionality: End devices can be reset remotely.