Description :  BZX-802 8 Channel Active Video Balun Video Balun CCTV Camera UTP CAT5 1U UTP Video Transceiver BNC to RJ45 Converter Transmission 1800M   Features :  Built-in transient suppression protection. The farthest transmission distance will be 1500m if it is used with passive transceiver and The farthest transmission distance can reach 2400m if it is used with active transmitter. Save project wire expenses、 each a pair of twisted pair wire transmits one channel of video signal and one common Cat-5 unshielded twisted pair wire can simultaneously transmit four channels of video signal. Adopt differential signal transmission with excellent anti-jamming ability.   Specification :  Frequency response: DC-8MHZ CMRR(Common Mode Rejection Ratio): 60DB Impedance: BNC terminal: 75ohm Connection terminal: 100ohm Applicable to NTSC、 PAL、 SECAM and CCIR systems. Type of the required wire: Unshielded Cat-5 or above twisted pair wire  (Please use standard Cat-5 or above twisted pair wire. The wire quality will directly affect the transmitted image effect and transmission distance.) Characteristic impedance: 100ohm±20ohm DC loop resistance: 18ohm\/100m Differential capacitance: 62pf\/m (Maximum) Surge suppression: 6000V 1.2 uS x 50 uS Power supply: AC110~240V 50\/60HZ Material: Aluminium-alloy External dimension: 430mm x 105mm x 45.5mm (excluding BNC) Working temperature: -10\u2103-70\u2103 Storage temperature: -30\u2103-70\u2103 Humidity: 0 to 95% Weight: 2.5kg     Package includeds :    1 x BZX-802 8 Channel Active Video Balun Video Receiver  1 x Power Supply (Come with an adapter according to your country~)  2 x Mount Bracket  1 x Set of Srews       Details pictures :