Noise detector
Noise detector
Noise detector
Noise detector

Noise detector

    • 30~120dBA wide range, 20~12.5KHz wide frequency measurement
    • Adopt high-performance pre-polarized back-electret condenser microphone, wide dynamic range, stable performance
    • Output interface: RS-485
    • Power supply: 24VDC

     Mobile/whatsapp:  +86-13333858191     Email:  [email protected]


product description

Noise detector is designed mainly in accordance with the national standard GB/T 3785.1-2010 "Electroacoustic Sound Level Meter Part 1: Specifications" and the international standard IEC 61672-1:2002 for Class 2 Class X sound level meters. It is mainly used for real-time measurement of various types of noise such as environmental noise, traffic noise, workplace noise, construction noise and social life noise. With this module, customers no longer need to worry about complex noise signal processing, they can focus on their areas of expertise and create value for customers more quickly.

Technical index

Working voltage


Power consumption

[email protected]

Transmitter circuit working temperature

-20℃~+60℃, 0%RH~80%RH

Output signal

RS485 ModBus-RTU communication protocol

UART or RS-485 communication parameters

9600  N  8  1

Measuring range


Frequency weighting

A weighting

Frequency response range


Response time Fast

mode: 500ms; Slow mode: 1.5S


Less than 2% in the life cycle

Reference calibration point

94dB and 114dB calibration, reference sound pressure 20uPa, frequency 1kHZ

Noise accuracy

±0.5dB (at reference pitch, [email protected])

Dust cover influence

The influence in the range of 50~115db is less than or equal to 0.5dB; the influence in other ranges in the range is less than or equal to 0.7dB

working environment

Air temperature:-40~+60℃

Relative humidity


Static pressure



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