... 2.5KHz, 32 parameters 3 line LED display DW series digital 3-phase multifunction Power MeterDW/MDW 3 line 4 digits LED ... can indicate by customer when ordering.3) Output: 2-3 alarm output, act as 3-phase under-voltage/lacking phase/over ... manufacture thousands of different models of products, including Temperature Controller, Digital Adjustor,thermocouple (TC and RTD), Panel Meter, Sensor Meter ...