Product Name:UTP 4 Channel Passive Video Balun Transceiver Impedance: BNC terminal: 75ohm;Connection terminal: 100ohm ;Frequency response: DC - 8MHz Size: 10.3 x 5.7 x 2.8cm ;Weight: 736g;# CMRR (Common Mode Rejection Ratio): 60DB # Working temperature: -10C - 70C;Storage temperature: -30C - 70C When working with a passive transceiver and active transmitters, signals can be transmitted over a distance of up to 330 m and 1500 m, respectively. This 4-channel video balun allows you to use a shared or existing cable system. The video balun is designed to convert the video signal. into a balanced signal, suitable for transmission over ordinary Cat-5 unshielded twisted pair with perfect transmission effect, which can be applied in occasions such as video surveillance and hangouts, and can transmit four channels of video image simultaneously on 8-core Cat-5 twisted pair. The 4-channel UTP Balun uses differential signal transmission with excellent anti-interference ability. Save on project wires. Each twisted pair pair carries one video channel and one full video surveillance signal at a distance of up to 330 m when used with any passive UTP video transceiver. Up to 1500m with any active UTP video recorder. receiver. Power is not required. Built-in transient suppression protection. Applicable to NTSC, PAL, SECAM and CCIR systems. package content: 4 x passive UTP balun 4 x manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.