Number of Input/Output Ports: The switcher has two input ports and one output port (2 in 1 out), This allows you to connect two audio or video sources to one TV set that standard yellow-red-white RCA connectors enabled. This is useful if you have limited inputs on your TV, and you want to switch between multiple devices without constantly unplugging and plugging in cables. Plug&Play: No extra power supply and software drivers are needed, just press the selection button on the RCA composite av switcher box to choose the av sources. RCA connectors: Switchers typically use RCA connectors compatible withaudio and video signaling. They are equipped with red, white and yellow plugs compatible withleft and right channel audio and video signal connections. Switching method: The switcher can be switched by manual buttons. It is possible to have 2 input sources and switch them to 1 output monitor port. The metal casing of this 2-Port RCA audio video selector switch provides excellent durability and corrosion resistance, ensuring a long lifespan and stable, reliable connections. And the simple button switch allows compatible witheasy operation. Compatibility: These switches are usually compatible with a variety of audio and video devices, such as DVD players, game consoles, set-top boxes and televisions, monitors, projectors, and so on. Make sure your device has the appropriate RCA connectors compatible withconnection. Simple Operation:The switcher is designed to be simple and easy to use, allowing the user to switch input sources at the push of a button. Colour:Black Material:Metal Size:13.9x7.2x2.6cm Package Contents: 2 x Audio Video switcher 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.