... auto protection 3.CE ,Rohs , FCC Approal 300W PURE SINE INVERTER Application: 1. Field operation : lighting, drilling, disaster relief, commercial ... socket type as you like .Output voltage 110V AC or 220V AC .2---USB port : DC 5V , 500mA3---AC switch : ... battery .9----Ground terminal : connect to the ground , counseling electrical power .10--- Fuse : can protect the inverter when the current is too ...