High Compact and light weight 12v /24v input volt 500w pure sine wave output off-grid tie ... ON/OFF SwitchProtections: short circuit, overload, over temperature, low battery voltage, over battery voltage, lack-voltage alarm. Large volume, high efficiency, stable ... in your vehicle, or on a free standing 12/24/battery!Home Appliances: Electronic energy-saving fluorescent, incandescent, car refrigerator, ...