1Suitable Scenes: Battery circuit shut off switch has a wide range of applications and is suitable for Rv marine and automotive battery. 2Stable Performance: The battery power cut off switch prevents any current from being drawn from the battery when your Rv, boat or car is not in use; safely disconnecting the battery and prolonging its life. 3Strong Safety: The battery disconnect switch provides additional safety by completely cutting off power to the vehicle's electrical system. This helps prevent accidental electrical fires, power surges or any other electrical problems that may occur when the vehicle is not in use. 4Durable Construction: Marine battery selector switch is made of premium material, which is stable, reliable, sturdy and durable and has a long service life. 5Easy to Use: The marine battery isolator switches are designed to be easy to install and operate. It can be mounted within easy get of the driver or in a convenient location for quick and easy battery disconnection.