Micro-power telemetry terminal
Featuring an integrated design, the M21F-W520 adopts low-power consumption technology and an IP68 protection rating. Equipped with a built-in high-capacity lithium battery, it is suitable for monitoring sites with no power supply and harsh environments. The terminal realizes comprehensive functions including data collection, storage, alarm, and transmission for groundwater, geological hazards, water supply pipelines, etc.
It employs a high-performance industrial-grade 32-bit communication processor and industrial-grade wireless module, supported by an embedded real-time operating system (RTOS) as the software platform. Meanwhile, it provides interfaces such as RS485, RS232, and digital input (DI), which can meet the requirements of groundwater monitoring, geological hazard monitoring, water supply pipeline monitoring, and other application scenarios.
This product is widely used in the field of water conservancy and water affairs informatization construction, such as remote measurement and control fields including groundwater, geological hazards, water supply pipelines, agricultural water intake and irrigation, water resources, and water pollution.




| Item | Description |
|---|
| Interfaces | 1 channel of RS485 serial port1 channel of RS232 serial port2 channels of digital input (DI)1 channel of 12V power output |
| Data Format | 8 data bits, 1 stop bit, parity bit (odd, even, none) configurable |
| Baud Rate | Optional: 1200, 4800, 9600, 19200, 38400, 57600 (Bit/S) |
| Communication Method | GPRS/CDMA, 3G/4G full Netcom |
| Communication Bit Error Rate | ≤ 10⁻⁶ |
| Sleep Current | ≤ 30μA / 3.6V |
| Power Supply | Built-in 20Ah rechargeable lithium battery |
| Dimensions | Height × Diameter: 240 × 133mm |
| SIM Card Type | Micro SIM |
| Operating Environment | Temperature: -40~+85℃; Humidity: ≤95% |