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