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Home / Sensors / Analog 4-20mA Output Noise Sensor Module Industrial Sound Sensor Decibel Meter

Attributes

Brand -
Category Robotics / STEM Teaching Tools / Sensors
Origin -
Output Signal 4-20mA Analog Current Loop
Measurement Range 30dB to 130dB
Frequency Weighting A-Weighting (dBA)
Response Time Fast/Slow Selectable
Operating Voltage 12V DC to 24V DC
Accuracy ±1.5dB at reference conditions
Microphone Type Pre-polarized Condenser
Protection Rating IP54 Dust and Splash Resistant
Operating Temperature -10°C to +50°C
Mounting Style DIN Rail or Wall Mount Bracket

6 reviews

A

Anonymous

Mar 31, 2026

Rating: 5/5

Excellent value for money

Compared to handheld decibel meters, this module offers continuous monitoring at a fraction of the cost per point. It has helped us identify peak noise times effectively.

A

Anonymous

Mar 24, 2026

Rating: 5/5

Perfect for factory monitoring

We installed these modules across our assembly line to monitor noise levels continuously. The 4-20mA output integrates seamlessly with our existing PLC system. Calibration was straightforward, and the readings are consistent.

A

Anonymous

Mar 24, 2026

Rating: 4/5

Solid industrial sensor

Good build quality and reliable performance in a dusty environment. The only reason for 4 stars is that the manual could be more detailed regarding wiring diagrams for specific controller brands.

A

Anonymous

Mar 12, 2026

Rating: 5/5

Easy integration

Our engineering team had this up and running within an hour. The current loop output is very robust against electrical interference in our heavy machinery room.

A

Anonymous

Mar 10, 2026

Rating: 5/5

Reliable and stable

Been running this sensor for three months now without any drift in values. The A-weighting filter works exactly as expected for occupational health compliance checks.

A

Anonymous

Mar 01, 2026

Rating: 3/5

Works well but sensitive to wind

The sensor works great indoors. However, when we tried using it in a semi-outdoor loading dock, wind noise affected the readings significantly. You definitely need a windscreen for outdoor use.

5 FAQ

Q: What is the maximum cable length for the 4-20mA output?

A: For a 24V supply, you can typically run the signal up to 500 meters depending on wire gauge and load resistance, thanks to the nature of current loop signals.

Q: Can this be powered by a 24V supply directly?

A: Yes, the sensor operates on a wide voltage range of 12V DC to 24V DC. It can be connected directly to standard industrial power supplies.

Q: How do I mount this on a DIN rail?

A: The unit includes a built-in clip on the back. Simply align the top hook with the rail and press the bottom until it clicks into place. No extra tools are needed.

Q: Does this sensor require external calibration?

A: The module comes pre-calibrated from the factory. However, for strict compliance purposes, we recommend annual verification using a standard sound calibrator.

Q: Is there a digital output option like RS485?

A: This specific model is analog 4-20mA only. We do carry a separate model with RS485 Modbus output if your project requires digital communication.

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