What Does CCTV Mean? CCTV is short for “closed-circuit television.” CCTV systems use cameras and monitors to record or view activity in and around a property. This can be used for security purposes, to monitor traffic, or even to provide entertainment. How Does CCTV Work? Closed-circuit television systems work by sending a signal from the
Understanding Power over Ethernet (PoE) Wikipedia states that PoE (power over Ethernet) is the process where systems send electrical power over the same data cabling as the Ethernet transmission. In this manner the data cabling can send both the data transmission and power to certain devices Power is injected onto the cable at a voltage
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