Quantity:(2-Pairs) Size:Length（7inch/19cm) Material:(plastic). Color: Black Connectors 1: RJ45 to BNC male/DC male jack , Connectors 2: RJ45 to BNC male/DC female jack. Compatible with CVI, TVI, CVBS and AHD video devices, Fit for 1080P 3MP 4MP 5MP 8MP CCTV Cameras, monitor, DVR card and recorder etc. Easy installation, using the standard UTP CAT5 cable system and low voltage power supply. LED indicate (green light) is working model , (yellow light) not working. Video transmission Via UTP CAT5.