The Dual Battery Isolator can install to 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:blackMaterial:ABSPackage Contents:1 x Smart Battery Isolator with Screw accessoriesOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.