4 position (1 ON / 2 ON / 1+2 ON / 1+2 OFF), single pole marine battery isolator / changeover switch with fixed control knob and round body profile.
For selection / isolation of 2 batteries (or battery banks) on boats.
Useful for selecting power sources, preventing battery drain if left for long periods, or isolation of the power sources in an emergency.
 
Sold individually.