This is the Data System AVS430, a 3-input AV selector. It's an AV selector that automatically switches between three AV devices. While it's automatic, AV3 can be switched in conjunction with the reverse gear signal. For detailed switching conditions, please search for "Data System AVS430" to find the Data System page and refer to it. AV3 input cable included. Operation has been confirmed. All accessories are shown in the photos.