Perko 8504DP Medium Duty Battery Selector Switch w/Alternator Field Disconnect & Key Lock [8504DP] Cartography | Garmin BlueChart Vision A second battery input is

A second battery input is also provided to monitor voltage on a second battery

Max Wattage: 17w Specifications:

Ideal for both Power and Sailboats

and household spills

which includes the specific gasket and mounting hardware for your electronics if not supplied by manufacturer with unit

Perko 8504DP Medium Duty Battery Selector Switch w/Alternator Field Disconnect & Key Lock [8504DP] Cartography | Garmin BlueChart Vision A second battery input isMedium Duty Battery Selector Switches Diameter: 5 1 4" Depth: 2 5 8" Polycarbonate Body with Brass Terminals Ignition Protected For use with 6 to 32 Volt Marine Electrical Systems Capacity 250 AMPS Continuous, 360 AMPS 5 Mins. Intermittent Terminal Stud Size: 5 16" When used with Non Unitized Alternators, these models will interrupt the field current (reducing the possibility of damage) if turned "OFF" with the engine running. Specifications: AFD: Yes