Perko Compact Medium Duty Battery Selector Switch w/o Key Lock One Size. This makes for easy installation. These switches can be mounted in numerous locations and positions. And as ignition protected switches they can be installed in the engine rooms of gasoline powered boats. Features/Specifications: Requires 1/3 rd less space to mount. On/off and selector versions. Popular 90 easy to identify position rotation New smooth rotary action Specifications for Perko Compact Medium Duty Battery Selector Switch w/o Key Lock: Manufacturer: Perko Color: Black Features of Perko Compact Medium Duty Battery Selector Switch w/o Key Lock AFD: No Lockable: No Positions: 2 Package Contents: Perko Compact Medium Duty Battery Selector Switch w/o Key Lock Perko 8511DP: Compact Medium Duty Battery Selector Switch w/o Key Lock One Size