Industrial Energy Meter single&3 phase RMS measurement for volt,amp,power.frequency,power factor,reactive power,etc. 2011--Industrial Energy Meter, ... ±0.3% F.S±2 digit Alarm OutputRelay/SSR output for any power parametersSampling Speed<0.2s Communicaiton RS485 / ... field, such as machinery, electrical cabinet, power sub-station, industrial automation, etc. In addition to supply MYPIN brand products, ...