1. High Quality Material: Dual battery isolator is made of high quality ABS material, wear resistant, anti shock, rugged and permanent. 2. Excellent Performance: Professional manufacturing, exquisite workmanship, IP67 , can withstand extreme weather environments. 3. : VSR will connect or disconnect the auxiliary battery and starter battery according to the car battery current charging level, protect battery. 4. Low Power Consumption: Standby power consumption as low as 10mA, working power consumption 250mA, with low power consumption. 5. Universal Fitment: Voltage sensitive relay universal fits for cars, yachts, RVs, ATVs, UTVs, etc, and the working voltage is DC 12V. Specification: Item Type: Voltage Sensitive Relay Material: ABS Working Voltage: DC 12V Rated Current: 140A Continuous Rated Current: 90A to 120A Peak: 160A Grade: IP67 Fitment: Universal for car, yacht, RV, ATV, UTV, etc. How to Use: 1. Open the base of the relay and connect the two M6 studs with the positive poles of the main and auxiliary batteries.2. Black wire connects to ground wire. PackageList: 1 x Voltage Sensitive Relay 4 x Screw 1 x Terminal 1 x User Manual