Features: Easy installation and simple operation. Lightly press to mute the device; useful under specific conditions. Plug and play; no power supply or additional software required; does not affect sound quality. Analog signal supports maximum 2V p-p input and output. Input and output frequency range: 20Hz ~ 20kHz. Uses standard o cable; input transmission distance up to 8 meters; output transmission distance up to 8 meters. Compact and mini size; easy to place, suitable for desktop and office use. Dimensions: 78 x 50 x 20 mm / 3 x 2 x 0.79 in. 2-in-1-out RCA stereo o switcher with mute button; no external power required. Bidirectional L/R stereo o switcher designed for users with multiple o sources and outputs. Main functions: ① Select o input between source 1 and 2 to get one output. ② Select o output between device 1 and 2 to receive one input. How to use: ① Connect two o sources (e.g., CD player, computer) to ports 1 and 2, and one o output (e.g., speakers) to the IN/OUT port. ② Connect one o source to the IN/OUT port and two o outputs to ports 1 and 2. Specifications: Application: Computer, microphone, monitor, DVD player, projector, television Type: o line Connector-A: RCA Connector-B: RCA Model Number: o Bi-Directional Switcher G: Female-Female Package includes: 1 x L/R Stereo o Bi-Directional Switcher 1 x L/R Stereo Cable (1.5m) 1 x User Manual