Transmission Distance - 0-400m/437.4yd; Interface - BNC Head; Input Voltage - DC12V (without Power Supply); Transmission Cable - Single Core Coaxial Cable; Operating Temperature - -20℃ to 70℃. perfect for reliable, long-term use in diverse circumstances. advanced surveillance solution facilitates the simultaneous transmission of four analog camera video signals, improving your monitoring system's scalability. features a single-channel pass-through signal and 3-channel superimposed signal transmission, offering versatile video surveillance options. Our modularly designed 4-channel video multiplexer effectively combats interference and ensures high-quality video transmission. Equipped to support a robust 400 meters transmission distance, it's perfect for installations requiring significant range. This reliable and flexible device requires no changes to terminal equipment configuration. It supports hot swapping, plug and play for a seamless setup. Enjoy 4 channels of real-time HD video display with multiple display modes. Product name:Analog four-channel video multiplexer Compatible line elements:480 line, 1540 line, 700 line, 1950 line, 1200 line, etc. Transmission distance:0-400 meters Input voltage:DC12V Transmission wire:single core coaxial cable Is it waterproof:no Working temperature:-20℃-60℃ Relative humidity:0-95% (non-condensation) Colour:Black Material:Titanium alloy Size:Overall dimensions:130x103x31MM Package Contents: 2 * video splitter Only the above package content, other products are not included. Note: Light reflection 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.