... Wide & Stable frequency range, Output programmable setting, Full protection features, Good price and lead time, easy front-panel TJB-2D Digital ... 7) V, A, W, Hz display accurately, digital, simultaneously8) With full protections (over voltage, over ... - cooling typeOperating Temperature/HumidityTemperature :0-45oCHumidity :0-90% (no-coagulating) Digital Programmable Variable Frequency AC Power Supply ...