OdiySurveil(TM) Cat5 RJ45 BNC 4Ch Passive Receiver Transmitter White UTP Video Balun for CCTV System Interface : 4 x BNC Video Female, 1 x RJ45 8P8C Socket;Frequency Response : DC-8MHZ; Impedance: BNC terminal: 75ohm, Connection terminal: 100ohm Working temperature: -10C - 70C ;Storage temperature: -30C - 70C Brand product with the best quality and more efficient signal transmission,do not compare with those junk materials.Applicable to NTSC, PAL, SECAM and CCIR systems Frequency response: DC - 8MHz ;CMRR (Common Mode Rejection Ratio): 60DB