... ,Digital display,soft start, thermal cooling fan,CPU control 6000W Off-grid Solar panel invertor / Solar ConvertorsInverter Output Wave Form: Pure ... 0.5V or 19.5DC±1V or 42VDC±1VOver LoadShut Off OutputOver Voltage Shut Down15.5V or 30.5V or 61 ... .2V or 120VOver ThermalShut Off Output AutomaticallyFusesShort CircuitEnvironmentWorking TemperatureBetween -10°C and +50°CWorking Humidity20 ...