Fits: for ATV, UTV, Boats, RVs,marine vehicle, truck, caravan
Fuction: Voltage Sensitive Rela helps to reserve a fully charged battery at all time, avoid the dead battery and possibility of towing on the sea
Package Included: Dual Battery Isolator Kit *1 Product instruction*1
Note: Not Fit for lithium batteries
Tips: If you have any other questions, please consult us and we are happy to answer it for you