uxcell Pair 4 Channel BNC Jack to UTP RJ45 Video Balun Passive Transceiver Product Name : Video Balun Transceiver;Type : BNC to UTP RJ45 Video Balun Total Size : 95 x 80 x 28mm/3.7" x 3.3" x 1.1"(L*W*H);Technical Paramerers : Impedance:BNC-75 Ohm;RJ45-100OhmWorking temperature:-10~70 degreeStorage tempepature:-30~70 degreeApplication to NTSC,PAL,SECAM and CCIR sytems Color : Silver Tone, Black;Casing Material : Metal Weight : 442g Package Content : Pair x Video Balun Transceiver