1. The IC card serves as a data carrier, enabling automatic charging functionality;
2. The management department writes the user's paid fees 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 once the water volume is depleted, and it can only be used again after repurchasing water;
3. Power supply methods include dry batteries and lithium batteries, while billing methods include single price and tiered pricing.
