DDSY722 Electronic Single-Phase IC Card Prepaid Energy Meter

1.1 Smart IC Card Management, Convenient and Efficient

One meter, one card, dedicated use: Each meter is equipped with a unique IC card. Loss of the card does not result in loss of electricity, and the meter can be used again once a replacement card is provided.

Bidirectional Data Transmission: The IC card can transmit meter data (such as remaining balance and electricity usage) back to the backend system, enabling power supply companies to monitor user electricity usage in real-time.

Convenient IC Card Recharging: Users can recharge their IC cards at sales points or self-service terminals. Once inserted into the meter, the IC card automatically updates the data, and the LCD screen displays the purchased electricity details.

1.2 Multiple Alarms for Safe Electricity Use

Low Power Alarm: When the remaining power drops below a set threshold, the alarm light turns on, and users are prompted to recharge to avoid power cutoff.

Overload Alarm: If the user's electrical load exceeds the maximum set power value, the system will automatically disconnect the power within 5 minutes and remind the user to adjust their load.

Power Cut Warning: When the remaining balance reaches zero, the meter automatically cuts off power and uses the alarm light or LCD to show a "power off" message. After recharging, the meter will restore power.

1.3 Multiple Protective Measures, Ensuring Data Security

Anti-Tampering Design: The meter detects reverse power, illegal wiring, or abnormal current and triggers an alarm to prevent unauthorized electricity use.

Electromagnetic Interference Protection: The meter is designed with full shielding and sealing to provide strong protection against electromagnetic interference, preventing external tampering.

Data Integrity: Data is stored in EEPROM, a non-volatile memory, ensuring no data loss even during power outages, maintaining data integrity and security.

1.4 Low Power Design, Energy-Saving and Environmentally Friendly

Low-Power Chip: Uses efficient, low-power chips with a voltage line consumption of 2W and current line consumption of 10VA, reducing energy use and operating costs.

Long Service Life: The device has a service life of up to 10 years and is equipped with a flame-retardant ABS shell, making it resistant to fire, moisture, and corrosion, suitable for both indoor and outdoor environments.