Electrical control: The switch offers 2, 3, or 4 position configurations for marine boat power management. Reliable and durable construction: Built with tinned copper contacts and ABS plastic housing for heavyduty use, designed to withstand challenging marine conditions. Easy to use design: Straightforward ON/OFF operation; does not require combining batteries or disconnecting alternator fields, simplifying installation and operation. Use scenarios Scenario 1: On a boat with multiple loads such as navigation gear, lighting, and auxiliary systems, use the switch to select which circuit is active and manage energy efficiently. Scenario 2: During maintenance or troubleshooting, quickly isolate a non critical circuit without rewiring or disconnecting power sources. Scenario 3: When working with alternator or charging configurations, switch between power arrangements without affecting other systems.