continuous power : 2000W Peak power : 4000W Input voltage : DC 12V / 24V Output voltage : AC 110V-120V/220V-240V +/- 10V Frequency :50/ 60 +/- 3Hz USB output : 2 USB 2.1A Modified sine wave AC Socket : Us sockets*3 Optional:sockets according to the different market . Multiple protection functions : low voltage, over voltage, overload, over temperature, short circuit, reverse connection, etc.