Features 1.PLUG AND PLAY: Reliable and flexible equipment, no need to change the terminal equipment settings, support hot swap, no need to debug and plug and play. 2.4 CHANNEL: Video multiplexer realizes single channel pass through signal and 3 channel superimposed signal transmission, providing diversified video surveillance solutions. 3.ANTI INTERFERENCE: 4 channel video multiplexer is based on modular design, which can effectively resist interference and guarantee the quality of video transmission. 4.LONG TRANSMISSION DISTANCE: Video multiplexer transmitter and receiver support 400 meters transmission distance, to meet the needs of long distance installation. 5.MULTIPLEXER: Analog video multiplexer is able to transmit four analog camera video signals at the same time to improve the scalability of the surveillance system. specificationItem Type: 4 Channel Video Multiplexer_x000D_ Material: Iron Shell_x000D_ Transmission Distance: 0?400m/437.4yd_x000D_ Interface: BNC Head_x000D_ Input Voltage: DC12V (without Power Supply)_x000D_ Transmission Cable: Single Core Coaxial Cable_x000D_ Operating Temperature: ?20 to 70 PackageList 1 x Transmitter 1 x Receiver 1 x Instruction Manual