... Meter single&3 phase RMS measurement for volt,amp,power.frequency,power factor,reactive power,etc. 2011--Industrial Energy Meter, digital Watt ... DC)Measure ParametersRMS measurement, 1/3 phase volt,amp,power,power factor,frequency,KWH,reactive powerAppearance48H*96W*100Lmm, 12/ ... (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho ...