Watt-Meter
Details
Round from factor
1.- rating current is from 40 Ampere to 100 Amperr, rating voltage is 127 phase to neutral, 220 phase to phase, frequency i s 60 Hz
2.- Kwh curretn, Kvarh, Kw, Volt ( instantaneous), Power factor
3- Without battery
4.- i need rs485 both infrared and radio frequency
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