产品名称（Product Name）： Non-magnetic and valveless IoT water meter (iron shell, copper shell, plastic, stainless steel)

功能（Function）：

1.1 Adopting non-magnetic metering technology, the mechanical part is separated from the electronic module, which is convenient for on-site installation or disassembly.

1.2 Retaining the mechanical display mode, it is convenient for users to intuitively check the water consumption.

1.3 The electronic reading can automatically upload data to the server through NB-IoT communication, which can realize remote data monitoring.

1.4 Adopting NB-IoT wireless communication technology, it 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 Maximum allowable working temperature: 30℃ for cold water meter.

2.3 Metering characteristics

2.3.1 Level 2 water meter (accuracy level is level 2)

2.3.2 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).

主要机械参数（Main mechanical parameters）：