Whistler Pro-3000W 3,000 Watt Power Inverter 3000 Watts Continuous power Mountable. Features 3 AC Outlets and 1 USB Port, along with Digital Battery Volt/Watt Meter (Monitors input volts and output watts). Full Output Power: Other inverters have reduced output over time. Thermostat-controlled Cooling Fan. High Surge / Ground Fault Sensing / Overload Indicator / Remote Operation Jack. For safety, features five separate points of Electronic Circuit Protection.