Smart Dual Battery Isolator Relay 12V 140Amp Waterproof for Off Road Vehicles ATV UTV RZR Features： 1、Wide Application: Dual battery isolator is compact and suitable for ATV UTV 4WD Rzr RV Battery Relay System, bringing you professional use results. 2、Powerful Function: Just like having two separate power sources, the dual battery isolator kit allows your accessories to run on a separate battery when the engine is not running in the vehicle, while keeping the main battery charged. 3、Operating Voltage: Smart battery isolator with voltage sensitive chip, which relies on cutting in at 13.3 volts and cutting out at 12.8 volts to ensure that the primary battery is always ready for vehicle operation. 4、Smart Charging: Dual battery isolators with cutting edge programming designed to provide optimal performance, and avoid the possibility of dead batteries and towing at sea. 5、Professional Manufacturing: The manufacturing conforms to the standard specification, strictly follows the factory quality control, and can work in dusty, wet and unexpected extreme weather conditions. Specification： Item Type: Dual Battery Isolator Kit Material: ABS, aluminium alloy Compatibility Range:  The compact battery isolator is suitable for almost anywhere, for ATVs, UTVs, boats, RVs, Marine vehicles, trucks, caravans Package List： 1 x Dual Battery Isolator 3 x Battery Terminal  3 x Battery Clip  3 x Battery Clip Protector Cover 6 x Strap 1 x Package of Accessories(5PCS) 2 x Instruction Manual 1 x Red Cable 1 x Black Cable