NRM01 Wireless Receiver Module User Manual, mainly used to cooperate with wireless pressure instruments, can receive the collected data of pressure instruments through wireless communication, and transmit the data to the upper computer through serial port.
The NRM01 wireless receive module is a compact, all‑metal device that supports the standard MODBUS‑RTU protocol and can receive data from multiple wireless pressure gauges simultaneously. It offers up to 16 communication channels and a transmission range of up to 200 m, making it suitable for remote pressure monitoring applications.
The manual details power requirements (DC 3 V), RS232 interface, installation guidelines, trial run procedures, command formats for reading single or multiple pressure values, and comprehensive maintenance and troubleshooting steps. It also includes care instructions and safety precautions for reliable long‑term operation. This manual is written in Chinese.
| Supply voltage | DC 3 V |
|---|---|
| Communication interface | RS232 |
| Baud rate | 9600 bps |
| Operating temperature | -20 ℃ ~ 60 ℃ |
| Response time | ≤ 100 ms |
| Average power consumption | ≤ 2 mW |
| Communication frequency band | 428 MHz ~ 435.5 MHz |
| Number of channels | 16 |
| Device address range | 0 ~ 255 |
| Receiving address range | 0 ~ 27 |
| Maximum transmission distance | up to 200 m |
| Dimensions (excluding antenna) | 82 mm × 28 mm × 9.3 mm |
| Weight | ≈ 170 g |
When the module’s communication LED flashes once every 3 seconds, the wireless pressure gauge and the module are communicating normally.
Check that the power connector is firmly seated or replace the power module if it is damaged.
The module supports up to 16 communication channels, allowing it to receive data from multiple gauges simultaneously.