3、关阀功能：当出现剩余购买水量为0、电池欠压、磁干扰等情况时，自动关闭阀门，液晶提示“报警”、“关阀”。

3. Valve closing function: automatically close the valve when the remaining purchase water volume is 0, battery undervoltage, magnetic interference, etc., and the LCD prompts "alarm" and "valve closing".

4、剩余不足报警功能：当剩余水量为2.0 m3时，阀门自动关闭，液晶显示“购卡”“关阀”，提醒用户及时购水，用户再插一次卡，即可使用剩余水量。

4. Alarm function for insufficient residual water: when the residual water volume is 2.0m3, the valve will close automatically, and the LCD will display "purchase card" and "close valve" to remind the user to purchase water in time, and the user can insert the card again to use the residual water volume.

5、以智能IC卡为信息载体，具有极强的保密性和抗干扰性。

5. With smart IC card as information carrier, it has strong confidentiality and anti-interference.

6、水表内部采用非易失性存储器保存数据，掉电时数据不丢失，数据可保存十年以上。

6. Non volatile memory is used to store data inside the water meter. Data will not be lost in case of power failure. Data can be saved for more than ten years.

7、可配合相应的预付费、燃气表、热能表等组成公用事业一卡通系统。

7. It can cooperate with the corresponding prepayment, gas meter, heat meter, etc. to form a utility card system.