Bluewater Off/1/2/Both Battery Switch - Panel Mount - Red [9800-007-10]Off 1 2 Both Battery Switch Panel Mount Red Designed for dual battery setups, this 1 2 Both selector switch gives you full control to route power from Battery 1, Battery 2, both, or neither. Its ideal for managing power flow, setting up backup systems, and charging multiple battery banks all from a single, intuitive control point. Ignition protected and safe for installation aboard gasoline powered boats, this 1 2 Both switch is perfect for both