... 12v /24v input volt 500w pure sine wave output off-grid tie solar inverter 500w CE, RoHS,ISO We ... ourselves. The character is high frequency, small scale and off-gird. Approved the patent. FeaturesHigh-frequency transfer, smaller volume ... -in cooling FanReliable implementation 120 volt AC outletOverload Indicator Power ON/OFF SwitchProtections: short circuit, overload, over temperature, low battery ...