The Dual Battery Isolator can install to most of vehicle,for example Truck, SUV, RV, ATV, UTV, Boat and so on. The Double Battery Automatic Charger with Cut-In:13.3V, Cut-Out:12.8V. The 140 Amp Dual Battery Isolator is IP65 Certified, it can work in dusty, wet and unexpected extreme weather condition. Cause your accessories to run from a separate battery while the engine is not working on your vehicle, and at the mean time holding your main battery and your vehicle always to work. colour:black Material:ABS Package Contents: 1 x Smart Battery Isolator with Screw accessories Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.