1、Dual Circuit Switch: Battery switch switches two isolated battery packs (not included) simultaneously without interrupting power. 2、Ignition Protection: IP66 waterproof for safe installation on gasoline powered boats; 300 amp continuous rating for outboards and small gasoline or diesel engines. 3、Tinned Copper Studs: Good conductivity, studs accept 3/8in (M10) ring terminals, 7/8in (22 mm) stud lengths accept multiple cable terminations. 4、Easy Installation: The isolation cover protects the rear contacts, and the breakout tabs allow wire access in any direction. Enclosure design allows for surface, rear panel or front panel mounting. 5、Wide Application: Widely used in cars, ships, RVs, campers, travel trailers, trucks, ATVs, UTVs, battery packs and other equipment.