Dual Voltage Display: Equipped with a dual voltage DC voltmeter that displays the main and auxiliary battery voltages in real time. This dual battery smart isolator can easily diagnose circuit problems and confidently master the system status Intelligent Delay Function: Featuring a 15s automatic delay function, this 12v split charge isolator kit effectively avoids frequent switching, significantly extending the service life of the isolator and battery Quick Installation: Our VSR isolator is easy to install, requiring no tools or specialized knowledge. Connect the circuit in a few simple steps without modifying the original wiring. Beginners can finish the installation in a short time Premium Housing: Featuring plastic housing, this voltage sensitive relay is waterproof, dustproof, and shockproof. It withstands mud, water, cold temperatures, and vibration, shielding the internal circuitry for stable operation and long service life Compact Design: Our dual battery isolator kit is designed for compact spaces like UTVs, ATVs, jet skis, and snowmobiles. It takes up no extra space and can be easily integrated without vehicle modifications, stably supporting for dual-battery systems