1. The IC card serves as a data carrier to realize automatic fee charging functions;
2. The management department writes the user's payment into the IC card. The water meter, with the data swiped in, automatically supplies water and calculates the remaining amount. The valve closes and water supply stops when the water volume is used up, and it can only be used again after repurchasing water;
3. The power supply methods include dry batteries and lithium batteries, and the billing methods include a single price and tiered pricing.
