... -precision measure three-phase voltage,three-phase current,active power,reactive power ,apparent power,power factor ,frequency.LED or LCD display , Local ... or 0-5/10V Environment Working environment-10°C- +55°CStorage Temperature-25°C- +70°CRelative Humidity≤93%, No corrosive gas ... Row LED48*4845*45Terminal diagramThe wiring diagram 96*96 SINGLE-PHASE AC VOLTAGE LED DIGITAL COMBINATION METER RH-UI32