Perko Compact Medium Duty Battery Selector Switch w/Key Lock One Size. Compact Battery Selector & Main Disconnect Switches Ignition Protected For use with 12 24 and 32 volt marine electrical systems Higher Rating Than Popular 8500 Series Switches Same bolt patterns as popular 8500 series Smooth positive position selector Compact Medium Duty Battery Selector Switch w/ Key Lock Specifications for Perko Compact Medium Duty Battery Selector Switch w/Key Lock: Manufacturer: Perko Color: Black Features of Perko Compact Medium Duty Battery Selector Switch w/Key Lock AFD: No Lockable: Yes Positions: 2 Package Contents: Perko Compact Medium Duty Battery Selector Switch w/Key Lock Perko 8512DP: Compact Medium Duty Battery Selector Switch w/Key Lock One Size