... panel meter measure voltage, current, power,frequency, power factor, energy, with RS485/ support MODBUS DI+DO PMAC625 model Power Meter / Energy Meter with ... back-up of integreated energy data;5. LED display, high brightness, auto-scrolling;6. CT primary is programmable;7. ... .2%Current0.2%Power0.5%Power factor0.5%Frequency0.01Active power1.0%Reactive power2.0% PMAC625 Current Power Meter, RS485