Thor TH2000 2000 Watt Power Inverter Full output power - 2000 watt/4000 watt peak modified sine wave power inverter. Low noise/self adjusting cooling fan. Ground fault sensing - designed to protect people against electric shock Ground fault sensing with re-settable GFCI button and LED indicator. Remote control input Smart Surge Control (SSC) ensures smooth start-up of appliances Short circuit protection - automatically shuts down until short circuit is removed Thermal cutoff - automatically shuts down if internal temperature exceeds safe design parameters