SMART WATER METER SOLUTION
Water meters are not just simple measuring devices; they play a crucial role in sustainable water resource management, ensuring efficient water supply and contributing to the development of smart living environments. The market has already introduced smart water meters utilizing NB-IoT, LoRa, and AMR technologies, enabling automatic data transmission, improving operational efficiency, and optimizing water resource management.
EPI Vietnam Technologies presents a Smart Water Meter Solution integrating NB-IoT wireless data transmission technology, offering a breakthrough in water consumption monitoring and management. This solution features products from leading brands distributed by EPI, including SIMCOM, XP-Power, and EPSON.
The smart water meter is equipped with advanced sensors that accurately measure water consumption. Sensor data is digitized and transmitted reliably via the NB-IoT network—a robust connectivity solution that ensures stable operation even in challenging environments such as underground or inside high-rise buildings.
At the control center, data is processed and analyzed in real time, allowing for rapid leak detection, monitoring of consumption trends, and efficient water resource management. Utilizing SIMCOM’s NB-IoT module provides superior coverage compared to GSM, ensuring a stable connection even in low-signal conditions.

Advantages:
- Energy-saving
- High accuracy
- Stable data transmission
- Efficient management
Main components used in the circuit:
1. Module NB-IoT – SIM7022 – SIMCOM
- LTE-FDD Bands: B1/B2/B3/B4/B5/B8/B12/B13/B14/B17/B18/B19/B20/B25/B26/B28/B66/B70/B85
- Supply Voltage Range: 2.1V – 4.3V
- Operating Temperature: -40ºC to +85ºC
- Dimensions: 17.6 x 15.7 x 2.3 mm
- Data Rate: Uplink: 159 Kbps & Downlink: 127 Kbps
- Power Saving Mode (PSM): 0.8 µA
Learn more:SIM7022
2. DC-DC Power Module – IE0303S – XP Power
- Output Power: 1W
- Nominal Input Voltage: 3.3V ± 10%
- Maximum Input Voltage: 3.63V
- Output Voltage: 3.3V
- Output Current: 300mA
- Isolation Voltage: 1kV
Learn more: IE0303S
3. Crystal Oscillator – FC-135 32.7680KHz – Epson
- Frequency: 32.768 kHz
- Frequency Tolerance: ±20 ppm
- Load Capacitance: 12.5 pF
- Equivalent Series Resistance (ESR): 70 kΩ
- Operating Mode: Fundamental
- Operating Temperature: -40°C to +85°C
- Dimensions: 3.2 mm × 1.5 mm × 0.9 mm
Learn more: FC-135 32.7680KHz
Block diagram

Contact EPI Vietnam Technologies Design solution
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