uxcell 2 x CCTV Camera DC 2.1x5.5mm UTP Passive Video Power Balun Transceiver Product Name : Video Balun;Material(External) : Plastic, Metal;Color : Silver Tone, Gray Video Input/Output : DC 2.1mm x 5.5mm Male/ Female;Power Input/Output : BNC Transfer Distance : up to 100m;Power : DC 12V Fit Cable : UTP RJ45;Adapter Size : 4.3 x 2.3 x 2cm/ 1.7" x 0.9" x 0.78" (L*W*H) Weight : 60g;Package Content : 2 x Video Balun