1The switch can be installed in many positions. As ignition protection switches, it can be installed in the engine compartment of gasolinepowered boats. 2Except the functions of the battery disconnect switch, the switch also allows the selection of batteries (two or more) for specific purposes, including starting the engine, running accessories and charging. 3It allows one or more batteries used in a system with one or more engines and help to connect the batteries in parallel for emergency start when one or two are fully discharged. 4This dual battery selector switch is made of highstrength plastic with copperplated cable lugs to improve durability. 5This is a kind of marine hardware assembly, which can be suitable for your boats' switch. And the quality of our product is stable and reliable. Item Type:BatterySelectorSwitch Material: PlasticMetalProduction: Made of High-Strength Plastic with Copper-Plated Cable Lugs to Improve Durability.Rated Current: 250A Continuous, 360A IntermittentApplicable System: Suitable for Systems with Two or More Batteries and 6-32v (Less Than 50V)4 Ways: Battery 1, Battery 2, Both, or Off positions. 1 x Switch2 x Key