IC Card Small-Diameter Water Meter

IC card is used as the data carrier to realize automatic charging function; the management department writes the fees paid by users into the IC card, and the water meter that has been swiped with data will automatically supply water and calculate the remaining amount. After the water is used up, the valve will be closed and water will be stopped, and it can be used only after purchasing water again; the power supply methods include dry battery and lithium battery, and the charging methods includ