The m-Series battery switches are compact and waterproof and can be installed in a variety of locations. A small footprint and 3 mounting options make installation easy. They are ignition protected and can be located in the engine rooms of gasoline powered boats. The one piece copper terminal studs are long and will accept multiple cables and the torque required to create a secure connection that minimizes resistance. Tactile textures on the face for knob position awareness by feel only. A removeable knob adds a level of security and provides a service lock-out when needed.