... On-Off input / output, with remote control and measure function;4) Isolation between input and output signal;5) True effective value measuring ... , Pb, Pc, ∑P4. Reactive power –Qa, Qb, Qc, ∑Q5. Power factor—PFa, PFb, PFc, ∑PF6. Frequency7. Active energy—kWh8. Reactive energy– kvarh DW9 ... 100--240V (85--265V)Power supply consumption≤7VA DW9E 3 Phase Power Meter / 3 Phase Electric Energy Meter