FeaturesEasy installation and easy use.Just need to press lightly to turn off the device, very useful in special conditions.Plug and play No power supply and other software required Does not affect sound quality.Analog signal maximum support 2V pp input and output.Input and output frequency range 20Hz 20KHz.Use standard audio cable, input transmission distance up to 8 meters, output transmission distance up to 8 meters.Compact and super mini size Easy to place and suitable for your desk and office.Super small size 785020mm320.79 inches.21in12Out RCA StereoAudio Switch Audio Switcher, RL Stereo Audio Switch Audio Switcher AB Switcher, RL Stereo Audio Switch Splitter 2112, with mute button and no ether power required.LR Stereo Audio Bidirectional SwitchThis is a bidirectional switch for LRchannel audio ports. LRAudio selector designed for customers who have multiple audio sources and outputs.Main features① Select audio input between 1 and 2 with 12switch and get an output② Select audio output between 1 and 2 to receive an inputHow to use① Connect two audio sources such as CD player computer to 12 ports and one audio output such as speaker to INOUT port② Connect an audio source to the INOUT port and two audio outputs to the 12 portSpecificationsUse Computer, Microphone, Monitor, DVD player, Projector, TVType Audio cableConnector B RCAConnectorA RCAModel Number Audio BiDirectional SwitcherGender FemaleFemaleThe package contains1LR Stereo Audio Bidirectional Switch1LR stereo cable 1.5m1 User manual