1、MAXIMUM VOLTAGE AND CURRENT: Battery isolator switch maximum working voltage is DC 32V, and the maximum working current is 150A, which can safely isolate the electrical system. 2、SAFE USE: Detachable back cover is free from any short circuit, which can safely disconnect the battery and eliminate battery power consumption when the vehicle or ship is not in use. 3、WATERPROOF COVER: Master shut off switch is compact and stylish, and the waterproof cover can better protect the keyhole and prolong the service life. 4、APPLICATION SCENES: Car battery isolator selector switch is widely applied to sail boat, yacht, marine, buses, touring car, motorcycle,truck and so on. 5、DURABLE MATERIAL: Made of nylon and copper, with high compressive strength, strong plasticity and stable structure, it is an ideal choice for ship application.