Soft start technical Compact and light weight Pure sine wave output High efficiency Voltage overload protection Low battery alarm / shut down Grounding connection and USB port Technical Data: Continuous power 300W Surge power 600W Input volt 12VDC Output volt 100/110/120VAC/ 220 / 230 / 240VAC Frequency 50 / 60Hz Efficiency 85% No load current draw <0.6A LED indicate Volt & Load LED indicate the in/output voltage LED indication LED indicate output power Output waveform Pure sine wave Automatic protection Overload,Short circuit,Overthermal Protection,Owe/Over Volt,Fuse, Cooling mode Fan THD <3%