This is the AV selector AVS414 from Data System. It switches between two RCA (V/L/R) inputs and a backup camera input (V only). There is no switching switch; the unit switches from V1 to V2 when the device connected to V2 is turned on. The backup camera input switches when a reverse signal is input. For more details, please search for AVS414 to find the product page. Included accessories are the main unit, power/reverse signal input cable, and instruction manual (with many wrinkles). The condition has some scratches/stains. Operation has been confirmed. 251218