Power Meter Measure:RMS,single or 3 phase,total 28 ... DW series True Value Display (RMS) Power Meter,Energy Meter Features: 1) True effective measure: voltage, current, active power, reactive power ... Temperature Controller, Digital Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, ...