DDSY877 single-phase electronic prepaid energy meterDetailed product description：

DDSY877 single-phase electronic prepaid energy meter

Pre sale of electricity, automatic power-off when used up.
Remind to purchase electricity, and when the remaining power is less than a certain amount, issue an alarm signal. The value of the alarm power and the alarm method can be flexibly set according to actual needs.
The digital display shows various data, and the function of writing back electricity data is convenient for the management of the power supply department.
One table, one card, multiple dynamic encryption to ensure user security.
Partition, classify, and ensure password security for different types of electricity meters with multiple passwords.
Secure checkpoint protection can effectively prevent checkpoint attacks.
Ultra low voltage operation ensures that the electricity meter can still function normally at 150V.
The unique anti crash circuit and multiple fault-tolerant designs ensure the safe operation of the electricity meter.
The unique power monitoring function ensures the normal storage of power outage data and guarantees the absolute accuracy of measurement data (pulses will not be lost during power outage)
It has overload control function.
It has a zero crossing electricity metering function.

DDSY877 single-phase electronic prepaid energy meter