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