As network technology becomes increasingly important to operate security systems, and affordably priced Internet protocol (IP) cameras and video management systems (VMS) are used more often, system designers and installers, such as electrical contractors, are realizing the need and efficiency of using power over Ethernet (PoE) First used for voice over IP (VoIP) telephones, PoE has gained popularity as a means of safely allowing power, along with data, to pass on Ethernet cabling.
展开▼
