DDSY450 single phase electric meter with prepay, it have register disply, and LCD display (7 number).
Working temperature:-10degree ~25degree
Relative humidity:Not more than 85%
Most working temperature:-25degree ~60degree
Working voltage:0.9~1.1 reference voltage
Utmost working voltage:0.0~1.15 reference voltage
Insulation voltage:More than 2000VAC
Power consumption:Not more than 2w/10vA
Data protection:At least 10 year when the power off
Measure active electric energy, long time working not need to corrected
Purchase electricity first and then have the electricity to use
Alarm for lack of residual electricity
It have anti temper function
Display residual electricity, accumulate and alarm electricity
Test pulse electric energy output