Note that prepaid water meters also have skills!
As a new type of water meter, prepaid water meter is indispensable in our life. When using it, we must pay attention to the correct use. The following should help you.
Prepaid water meter function: low voltage detection: when the battery voltage is lower than 3.8V, the motor valve is closed, displaying "undervoltage" and "valve closed". You need to install a new battery before you can reuse it. Magnetic protection function: when the strong magnetic field is close, the instrument will display "alarm" and close the valve. Keep mechanical word wheel display: the whole set has mechanical and electronic dual display functions.

Electric control valve: due to the water quality of the pipe network, the valve of the water meter is seriously damaged, which directly affects the charging and metering of the prepaid intelligent water meter. The selection of electric control valve requires long service life, high switch reliability, small pressure loss and difficult scaling in use. At present, ceramic valves are a better choice.
Prepaid water meter valve closing report: when the remaining water volume is insufficient, when the remaining water volume is reduced to the reported water volume (the reported water volume is set by the management department), the valve will automatically close to remind the user to buy water in time. At this time, the user can use his user card to open the valve and continue to use water. The valve will automatically close to remind the user every 1. When the remaining water volume is reduced to zero, the user card can be used to open the valve to enter the permeable state and continue to use water (applicable when the management department sets the permeable volume). When the air permeability continues to run out, the valve will automatically close and cannot be opened with the user card. Only after the user buys water again and recharges, can the valve be opened to continue using water, and the used permeation volume will be subtracted. Prompt of insufficient battery power: when the battery voltage of the water meter is lower than the set value, the water meter valve will automatically close. At this time, the user card can be used to open the valve and continue to use water. After 48 hours, if the battery is not replaced, the valve will be closed. The valve can only be opened after the battery is replaced. When the battery is low, the management department shall be notified to replace the battery in time. When the battery is low, the water meter will automatically prompt.