40-amp 12-volt/24-volt Digital Solar Power Charge Controller Protects battery from overcharge and discharge For use with 12 Volt or 24 Volt solar panels and batteries Can handle up to 960-watt or 40-amp from a solar array Digital display and led lights help to monitor your solar power system let you know the charge level of your battery at all times, no surprises Dedicated load terminal prevents dead batteries and adds another level of protection for your battery