91麻豆一区二区,91玖玖,91精品国产92久久久,亚洲精品视频一,久久久中文字,久久精品国产91,亚洲精品成人18久久久久

Because the program design of prepaid water meters is different in different manufacturers, the operation method of prepaid water meters of different brands may not be exactly the same. Here can only describe the common situation.

1. Insert the user's card into the water meter (for the RF card, put the card close to the card reading area), and the LCD screen displays the user's current remaining water and cumulative consumption information.

2. Some pre-paid water meters have a query/display button on the controller. When users want to query the usage of the pre-paid water meter, they can query the water quantity information through the "Display" button on the controller.