Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Communication Interface | RS485 / TTL |
| Measurement Range | 30 dB to 130 dB |
| Accuracy | ±1.5 dB |
| Frequency Weighting | A-Weighting |
| Operating Voltage | 5V DC |
| Response Time | < 0.5 seconds |
| Operating Temperature | -10°C to 50°C |
| Microphone Type | Electret Condenser |
| Output Protocol | Modbus RTU |
| Application | Industrial Noise Monitoring |
Anonymous
Mar 26, 2026
Rating: 4/5
Good value but needs calibration
The hardware is solid and the TTL output works well with our Arduino prototype. Just remember to apply a correction factor if you need lab-grade precision.
Anonymous
Mar 24, 2026
Rating: 4/5
Reliable monitoring solution
Been running this 24/7 for a month now. No drift observed yet. The A-weighting filter is appropriate for general environmental noise assessment.
Anonymous
Mar 22, 2026
Rating: 5/5
Perfect for our factory floor
We integrated this sensor into our existing SCADA system via RS485 without any issues. The readings are consistent and match our handheld calibrator closely.
Anonymous
Mar 16, 2026
Rating: 3/5
Works but documentation is sparse
The sensor itself functions as advertised, but the register map in the manual could be more detailed. Had to contact support to get the baud rate settings right.
Anonymous
Mar 15, 2026
Rating: 5/5
Excellent industrial grade module
Very stable readings even in environments with varying temperatures. The Modbus implementation is standard and easy to parse.
Anonymous
Mar 12, 2026
Rating: 5/5
Great for IoT projects
Compact size makes it easy to fit into custom enclosures. The response time is fast enough for real-time alerting systems.
Q: Is the enclosure waterproof?
A: The PCB module itself is not waterproof. For outdoor use, please house it in an IP65-rated enclosure with a sound-permeable membrane.
Q: Does this module come with a built-in display?
A: No, this is a sensor module designed for integration into larger systems. It outputs data via RS485 or TTL and does not have a local screen.
Q: Can this be powered directly by a Raspberry Pi GPIO?
A: While the logic level is TTL compatible, we recommend using an external 5V power source to ensure stable microphone performance, especially if other peripherals are connected.
Q: What is the default baud rate for the RS485 connection?
A: The default baud rate is 9600 bps, but it can be configured to 4800, 19200, 38400, or 115200 via command registers.
Q: Does it support C-weighting frequency filtering?
A: Currently, this model only supports A-weighting, which is the standard for most environmental and occupational noise regulations.
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