... system,building automation DW series 3-phase True Effective Value Energy Meter(RMS)DW/MDW 3-line LED display 1) Input ... power frequency, etc; can act as phase measurement, range:0-360°, display phase angle and input amplitude,mini power is 1mW, ... models of products, including Temperature Controller, Digital Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer ...