... ,reactive power ,apparent power,power factor ,frequen Description: Intelligent digital instrument be used in electricity grids , automation control system to ... Temperature-25°C- +70°CRelative Humidity≤93%, No corrosive gas placesAltitude≤2500m Security Insulation Resistance>100mΩACWAC 2KV EMC ESDgrade ... diagramThe wiring diagram 96*96 SINGLE-PHASE AC VOLTAGE LED DIGITAL COMBINATION METER RH-UI32