uxcell UTP CAT5 BNC Coax CTV Camera Video Audio Power Balun Transceiver Cable 2pcs Product Name : Video Balun;Material(External) : Plastic, Metal;Color : Silver Tone, Black, Gray Audio Input/Output : RCA;Video Input/Output : BNC Male;Power Input/Output : 2.1x5.5mm Male/ Female Transfer Distance : up to 100m;Power : DC 12V;Impedance : BNC: 75ohm, UTP RJ45: 100ohm Fit Cable : UTP RJ45 Cat5;Adapter Size : 4.3 x 2.2 x 2.2cm/ 1.7" x 0.87" x 0.87" (L*W*H) Weight : 71g;Package Content : 2 x Video Balun