500Watt off grid tie power inveter, over/low voltage shutdown protection, Car Power inverter,modified sine wave USB port, High Transform efficiency, fast ... :12V/24V/48VDCOutput volt:110V/220VACOutput waveform :Modified sine waveOutput power:500W Function details ModelMK-500M-121MK-500M-241MK-500M-481MK ... Temp. Humidity-30°C-70°CDimension196*95*55mmWeight1kg 500watt off grid tie inverter