l. Retain the display of wet water meter or dry water meter to facilitate the verification and calibration of water meter accuracy.
2. It is powered by a built-in lithium battery and can be used normally for more than 6 years.
3. Adopt special electric valve, low power consumption, small pressure loss, reliable switching.
4. Display function: LCD liquid crystal does not display during daily work of the water meter, displays when reading and writing cards, displays water volume data, valve status, etc., to achieve the purpose of reducing lithium battery energy consumption and ensuring the service life of the card meter.
5. Parameter setting function: The manager can set the parameters such as the alarm water volume and the upper limit of recharge in the water meter according to his actual needs by purchasing water from users.
6. Alarm function: When the amount of remaining water reaches the lower reporting limit, the valve closes automatically, and the LCD displays "Close Valve", prompting the user to purchase water in time. After swiping the card, the user can use the remaining water. If the remaining water volume is 0 M3, the valve closes automatically, and the user must purchase water before using it.
7. Valve closing function: When the water quantity purchased by the user is used up or the battery is under pressure and the water is stolen, the valve can automatically close the valve.
8. System card recognition function: When the card other than this system is close to the water meter, the LCD will display "card error" and display the error message code.
9. The non-volatile memory is used in the water meter, the data will not be lost when the power is off, and the data can be stored for a long time.
10. Waterproof performance: all internal circuits are filled and sealed, which can work normally in a humid environment.
11. Smart card: using inductive (non-contact) RF card, the card has the characteristics of strong confidentiality, anti-interference, easy operation, easy to identify, the circuit uses industrial-grade moisture-proof waterproof technology and anti- Collision and shock protection devices. Smart card read and write operation distance ≤50MM.
12. Integrated design, beautiful and strong, waterproof, anti-attack and anti-destruction.
