calculation. The appearance of IC card water meter is basically similar to that of general water meter, and its installation process is basically the same. Is to insert the IC card into the water meter. The working process of the IC card water meter is as follows: the IC card chip containing the amount of money is inserted into the IC card reader in the water meter. After the computer module recognizes and downloads the amount, the valve opens and the user can use water normally. When the user u