Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Communication Protocol | RS485 / UART |
| Measurement Range | 30 dB to 130 dB |
| Accuracy | ±1.5 dB |
| Operating Voltage | DC 5V - 24V |
| Response Time | < 1 Second |
| Frequency Weighting | A-Weighting |
| Operating Temperature | -20°C to 60°C |
| Housing Material | Industrial ABS Plastic |
| Interface Type | Terminal Block |
| Application | Industrial Monitoring, Smart City |
Anonymous
Mar 31, 2026
Rating: 4/5
Good value, easy integration
The UART interface made it very easy to connect to our Raspberry Pi gateway. Documentation could be slightly more detailed regarding register maps, but overall a solid product for the price.
Anonymous
Mar 29, 2026
Rating: 5/5
Accurate and reliable
Compared the output against a professional sound level meter and the variance was negligible. Great for setting up automated alerts when noise levels exceed safety thresholds.
Anonymous
Mar 29, 2026
Rating: 5/5
Perfect for factory monitoring
Integrated this sensor into our production line monitoring system. The RS485 communication is stable and the data readings are consistent with our handheld calibrator. Highly recommended for industrial use.
Anonymous
Mar 12, 2026
Rating: 5/5
Excellent for IoT projects
Using this for a smart city noise pollution project. The wide voltage range allows flexible power options, and the data format is straightforward to parse.
Anonymous
Mar 08, 2026
Rating: 5/5
Robust build quality
We installed these in a dusty warehouse environment. The housing feels durable and the sensor has been running 24/7 for three months without any drift or failure.
Anonymous
Mar 07, 2026
Rating: 4/5
Works as advertised
Simple setup with Modbus RTU. The response time is fast enough for our real-time dashboard. Only minor issue was the length of the terminal block screws, but easily solved.
Q: What is the maximum cable length recommended for RS485 connection?
A: For reliable communication at standard baud rates, we recommend a maximum cable length of 1200 meters using twisted pair shielded cable.
Q: Can this sensor measure low frequency noise accurately?
A: This unit uses A-weighting which approximates human hearing sensitivity. For specialized low-frequency analysis, additional filtering or a different weighting scale may be required.
Q: Is there a calibration certificate included?
A: Standard units come with a factory test report. Individual ISO calibration certificates are available as an optional add-on during purchase.
Q: How do I change the baud rate?
A: The baud rate can be configured by sending specific Modbus write commands to the configuration register. Please refer to the user manual section 4.2 for the command structure.
Q: Does this module support Modbus RTU protocol?
A: Yes, this sensor supports Modbus RTU over the RS485 interface, making it compatible with most PLCs and industrial controllers.
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