... low distortion 7) V, A, W, Hz display accurately, digital, simultaneously8) With full protections (over voltage, over ... , Current, Power, Frequency, LED digitalProtections functionOver voltage, over load, over temperature Short, over current latches output ... fan - cooling typeOperating Temperature/HumidityTemperature :0-45oCHumidity :0-90% (no-coagulating) Digital Programmable Variable Frequency AC ...