Features: 1.Function: Power On Off switch prevents any current from being drawn from the battery when your RV, van, boat, or car is not in use, to extend battery life. 2.Power Saving: The battery circuit shut off switch help eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely. 3.Safe Operation: The power switch has a crank rating that withstands 675A for 30 seconds, 450A intermittent for 5 minutes, and 300A continuously, protecting against fluctuations in current during ignition. 4.Easy to Operate: The switch design is easy to read and operate, simply turn the knob to either the On or Off position, and a satisfying click will let you know it's changed. 5.Simple to Install: The casing design allows for front or rear panel mounting, with 32V working voltage, M10x4 stud, allows the switch more widely applicable. Specification: Item Type: Marine Battery Selector Switch Material: ABS+brass+iron Color: Red Screw Specification: M10x4 Working Voltage: 32V Current: 675A Cranking (30 seconds) 450A Intermittent (5 minutes) 300A Continuous Switch Gears: 2 gears, off on Application: Applicable for RV Marine and Automotive Battery