Camper Cargo Trailer Break Away Switch Safety Brake Kit Switch and Battery KitLED Full Set Up Clam Shell Break Away System with Test Light. Includes Battery Box, Breakaway Switch and Battery. Includes Built In Charging Circuit and LED "Test" Button for Quickly Testing Battery Charge. Flange Mount Breakaway System. Box has cutouts for double duty as junction box. Includes Plastic Battery Box, J ELEC Breakaway Switch, and 12volt 5 Ah Battery. Clam Shell Battery Pack Has 15" Wire Leads and Mounting Bolts. Breakaway Switch Has 48"