产品名称（Product Name）：Prepaid remote water meter

产品介绍(Product introduction):

This water meter is a multi-rate water meter. It integrates remote communication, prepayment, tiered water price billing, fault detection and other functions. It has the characteristics of clear reading, accurate measurement, convenient management and control, beautiful appearance, safety and hygiene.

功能（Function）：

2.1 Prompt function: When the remaining amount in the meter is insufficient, the water meter will display the words "Insufficient balance" to remind the user to buy water as soon as possible.

2.2 Protection function: When the water meter encounters magnetic interference, the water meter will display the words "Abnormal" to warn; at the same time, the water meter will record the interference information.

2.3 Battery undervoltage prompt function: When the battery is low, it reminds the user to contact the management department to replace the battery; at the same time, the remaining water volume and the actual water consumption record data will be locked. After replacing the new battery, the water meter will automatically open the valve, and the original water consumption information data will be retained.

2.4 The display mode of mechanical metering is not changed, which is convenient for users to intuitively check the water consumption.

2.5 No wiring is required, and data is automatically uploaded to the server directly through wireless communication, and the measurement is accurate.

主要技术参数（Main technical parameters）：

3.1 Maximum allowable working pressure: equal to 1.0MPa.

3.2 Maximum allowable working temperature: 30℃ for cold water meter and 90℃ for hot water meter.

3.3 Metering characteristics: The accuracy level is 2. In the water temperature range of 0.1℃ to 30℃, the maximum allowable error of the water meter in the high zone (Q2≤Q≤Q4) is ±2%, and the low zone (Q1≤Q＜Q2) is ±5%. When the water temperature exceeds 30℃, the maximum allowable error of the water meter in the high zone is ±3%, and the low zone is still ±5%.

主要机械参数（Main mechanical parameters）：