... volt,amp,power.frequency,power factor,reactive power,etc. 2011--Industrial Energy Meter, digital Watt Meter(Wattmeter) Features: Power ... field, such as machinery, electrical cabinet, power sub-station, industrial automation, etc. In addition to supply MYPIN brand products, We have ... 086-13217608016(Barbara Guo) 086-13435730867(Peter Liao) 2011--Industrial Energy Meter, digital Watt Meter(Wattmeter)