1、 Performance characteristics:

1. Intelligent management has achieved prepaid fee management.

2. Write back function: When the user swipes the card, the status of the HVAC valve will be written to the card, making it easier for the management center to understand the operation of the HVAC valve.

3. Undervoltage protection function: When the battery voltage is detected to be lower than the set value, the prompt will automatically close the valve and the running data will be automatically saved.

4. Regular self check function: The timed switch valve prevents the valve from rusting due to prolonged use.

5. The "normal mode" and "energy-saving mode" are selected by the management department themselves.

6. The network version of the charging system enables easy communication and card reading data between the main station and sub stations.

7. Low temperature protection function to prevent pipeline freezing and cracking when the valve is closed.

2、 Product caliber and main parameters: