Whistler Pro-2500W 2,500 Watt Power Inverter  (Older Model) 2500 Watts Continuous power - 5000 Watts Surge Capacity (Peak Power) Mountable. Features 3 AC Outlets and 1 USB Port, along with Digital Battery Volt/Watt Meter (Monitors input volts and output watts). The AC output of inverters range from 110~120 volts Thermostat-controlled Cooling Fan. High Surge / Ground Fault Sensing / Overload Indicator / Remote Operation Jack. For safety, features five separate points of Electronic Circuit Protection.