1. The IC card serves as the data carrier to achieve automatic charging functionality;
2. The management department writes the user's paid fees into the IC card. The water meter, once the data is 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.
