... current, voltage & AC current, voltage, frequency and phase power. BLUESWIFT panel meter can measure the current, voltage frequency, active and reactive ... humidity 85%.A few sands are allowable in the air 3. Outside mechanical applied force withstand: common type 4. ... 0.5-1-0.5100V/5A 220V/5A 380V/5AThree-phase synchronous tableS2.5100V,220V,380/100V Voltage Current Energy Frequency Panel Meter