... True Effective Value Energy Meter(RMS)DW/MDW 3-line LED display 1) Input:true value single/three phase measure(bandwidth ... three wire two factors, three phase four-wire selectable.3) Output:3-line alarm output configurable,up to 8 segment output ... can manufacture thousands of different models of products, including Temperature Controller, Digital Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor ...