... 3. with many type of socket Digital energy saving power meter socketitem no: JL-PM2000 Refresh Frequency: over one times per ... supply,input /output time : AC2kV/min.1mAWorking Conditions:Temperature:-30~60°C Humidity: 10~95% RHCharacteristic:1.Dispaly cost rate in USD ... .dispaly elapsed time3. over load and under protection4.display PF, Amp, Voltage, Hz, VA, hours, on off, watt KWH, CO2 kg ...