Powerline 90309 is a 200-watt continuous, 400-watt peak DC to AC dual-outlet inverter with a USB port. It can convert 12-volt DC power from a vehicle's power socket to 120-volt, 60 Hz AC power, allowing you to use AC-powered devices in your car, truck, or RV. The combined power rating of both power sockets is 200 watts continuous, and the USB power output is 5 volts DC at 500 mA max. The inverter features indicator lights for normal operation, output overload, low battery voltage, and high battery voltage.