1. The IC card serves as the data carrier to enable automatic billing functionality;
2. The management department writes the user's payment into the IC card. The water meter, once swiped with the data, automatically supplies water and calculates the remaining balance. The water supply valve closes when the water volume is exhausted, 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 single price and tiered pricing.
