The intelligent water meter has the function of automatic fee -charging. The user paid to the water administrative department in advanced, the staff of the water administrative department inputs the data of purchased water volume into the IC card, then the user takes the IC card to home and swipes it on the induction area of the water meter (for inputting the information of the IC card into the intelligent water meter) and water will supply. During the period of water supply, the built-in microcomputer of the water meter will automatically check and subtract the used water volume. When the purchased water is used up, the intelligent water meter will cut off water automatically, and the user needs to buy water again. IC card can also records the operation condition of the water meter and manage the total used water volume, total purchased volume and the state of opening and closing of the valve by the control computer or control software. The intelligent water meter can increase efficiency, and effectively prevent exist of overdue bills, avoid the inconvenience of house call meter-reading. Unique Characteristics of Suntront Brand Contactless IC Card Water Meter: 1. Adopted contactless IC card patent technology, which can transmit wireless data outside water meter, so it has special functions of waterproof, damp-proof and anti-attack; 2. Adopted no energy consumption technology which can ensure the inside accessory batteries to be used for more than 10 years 3. Water meter, hot water meter and purified water meter all adopt unique technology of electric ball valve, which can greatly raise its performance 4. Its inside circuit is sealed with epoxide resin; so it can work normally in water.