Power over Coax Receiver -- Single Channel,use with up to three POC-1T12V units (daisy-chained), or one POC-4T48/56V. Power Input: 110VAC to 240VAC. Power Output: 48VDC to 56VDC. Connects via Cat5e to your Ethernet Switch, then connects to [appropriate transmitter] via COAX. NOTE -- Power and Length Limitations