4 in 1 out/AV converter/audio/video converter/audio/video switcher/audio/video converterFour inputs, one output, through the switch of the above switch, one of the three inputs is connected to the outputS terminal, 2 in 1 out, interface: audio and video RCA jack/S terminal, there are four-way switch on the upper panel, and there are corresponding indication marks.4 channels of AV audio and video input, two of which have S-terminal output, and one audio and video output, one of which can be switched at will.This switcher is especially suitable for friends who have multiple AV output devices (VCD, DVD, graphics cards, camcorders, video recorders, game consoles, set-top boxes, etc.), but TV and other AV receiving devices have limited or insufficient interfaces. The 4 channels of AV signals can be selectively switched and output through this switcher, and the AV input of a variety of audio-visual equipment can be switched. Very convenient.No power supply is required.It saves you the trouble of frequently plugging in AV cables. In addition, there is also a S-Video (S-Video) switching function, which realizes the selection and output of the input source of two S-Video videos without plugging and unplugging the S-video cable.4-channel AV composite audio and video input group (RCA)1 channel AV composite audio and video output group (RCA)2 way S-video video input1 channel S-video outputConvenient switch knobNo need for power supplyLossless video signalColour:blackMaterial:ABSSize:180x80x32mmWeight: about 230 gramsPackage Contents:1 x Audio Video SwitcherOnly 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.