... .0 cover material,PC, Plasticelectric three-phase pre-paid meter(electronic meter electric three-phase pre-paid meter(electronic meter ,watt-hour meer ,prepayment electronic meter,meter ... ×1040A3×2080A3×30100AWorking condition:Temperature range-20 +50Relative humidity ≤85% electric three-phase pre-paid meter(electronic meter ,watt-hour meter ,prepayment electronic meter,meter )