... Features:• Sufficient power• High efficiency• Smart and lightweight • Aluminum shell, surface hard oxidation, and excellent thermal performance • Short circuit, overload ... volt & loadLED show the in/out put voltageLED indicationLED show output powerOutput waveformPure sine waveAutomatic protectionOverload,Short circuit,Over ... range-30°C ~ + 70°CCooling modeFanTHD≤5% 300W Solar Pure Sine Wave Inverter