1High Power Capacity: With a rated current of 300A, this battery selector switch can handle high power loads, ensuring safe and reliable power cutoff and isolation. 2Dual Circuit: The switch features a dual circuit design, allowing for simultaneous disconnection of both the positive and negative connections, effectively preventing electrical leakage and battery drain. 33 Gear Selection: Equipped with 3 gear positions, you can easily select the appropriate gear according to your needs, providing convenient operation and control. 4Versatility: This switch is suitable for various boats, cars, trucks, trailers, and RVs. It can be used for power cutoff, anti theft purposes, battery maintenance, and more. 5Waterproof: With a waterproof and dustproof design, the switch provides extra protection, ensuring long lasting and reliable performance even in harsh marine or automotive environments.