The PROwatt SW Series feature True Sine-Wave AC output with 540, 900 and 1800 continuous watts respectively. With high surge capability, the PROwatt SW Series provides the necessary current to startup demanding electrical loads such as variable speed power tools, advanced electrical appliances, microwaves and much more. In addition to dual GFCI AC receptacles, the PROwatt SW Series include an innovative USB connection for providing power to most USB chargeable devices. The PROwatt SW Series offers many safety features not found in similar inverters. When equipped with a remote control, the PROwatt SW Series has the ability to provide automatic ignition lockout shutting down the inverter's output when the vehicle's ignition is not engaged.