UTP Video+Power Converter Kit for HDCVI/TVI/AHD up to 4MP Stackable with RJ45 (2 units) Passive video transceiver kit with HDCVI/TVI/AHD power supply with RJ45 connector. It consists of two baluns, a transmitter and a receiver. Transmit or receive HD color or B/W video signal in real time. Does not require feeding. Recommended maximum distance no greater than 15 meters for 12V 1st cameras. Surge protected with TVS. Exceptional immunity to interference.