The Vevor dual battery isolator kit is designed for 12V dual battery systems in vehicles and marine applications. It offers both manual and automatic modes for flexible battery management and includes an LCD screen for real-time voltage monitoring. Built-in high and low voltage protection helps safeguard the main and secondary batteries from deep discharge and overcharging. Its compact ABS construction makes it easy to install in tight spaces. This isolator is suitable for ATVs, UTVs, RVs, campers, trucks, boats, yachts, and other off-road or recreational vehicles.