产品名称（Product Name）：Non-magnetic and valveless IoT water meter

功能（Function）：

1.1 Metering and collection method: double reed switch pulse technology, photoelectric sensing technology (optional).

A. Adopt high-quality double reed switch and alternating working mode, which is equivalent to bistable mode, can effectively prevent metering errors caused by vibration and backflow, and can detect external magnetic field interference to ensure that the mechanical part and the electronic part count in a consistent manner.

B. Adopt photoelectric sensing technology to directly read the meter window value, accurate measurement, and ensure electromechanical consistency.

1.2 Retain the mechanical display mode to facilitate users to intuitively check water consumption.

1.3 Electronic readings can automatically upload data to the server through wireless network telemetry communication, and remote data monitoring can be realized.

1.4 Wireless communication is adopted, which is easy to install and does not require wiring.

1.5 When the mechanical reading cannot be read normally or the battery is low, the water meter will actively upload the abnormal status to remind the management department that the water meter has failed.

主要技术参数（Main technical parameters）：

2.1 Maximum allowable working pressure: equal to 1.0MPa.

2.2 Metering characteristics

2.2.1 Level 2 water meter (accuracy level is level 2).

2.2.2 Within the water temperature range of 0.1℃ to 30℃, the maximum allowable error of the water meter is ±2% in the high zone (Q2≤Q≤Q4) and ±5% in the low zone (Q1≤Q＜Q2); when the water temperature is higher than 30℃, the maximum allowable error of the water meter is ±3% in the high zone (Q2≤Q≤Q4) and ±5% in the low zone (Q1≤Q＜Q2).

主要机械参数（Main mechanical parameters）：