The TowSmart ProClass Trailer Breakaway Kit safely activates trailer brakes upon emergency separation from the tow vehicle. Features a built-in battery charger and push button for determining battery charge status. Includes a breakaway switch, cable, and pin with built-in LED indicator light verifying power is passing through the switch from the breakaway battery. 2 to 4 brake (1 or 2 axles) load capacity for holding trailer 15 minutes after activation.