Small Sound Sensor Module, ModbusRTU Protocol

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SKU: SUCH-NS-E0211

$108.46

● Interface type: RS485 ● Measurement range 30~130dB ● Frequency range 31.5Hz~8kHz ● Resolution 0.1dB, accuracy ±1.5dB

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🕒 Delivery date: 6-12 days

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Overview
Specs
Application
FAQ
Reviews

Overview

Small sound sensor module uses an A-weighted measurement method, with a measurement range of 30–130dB and an accuracy of ±1.5dB. It supports Modbus RTU communication protocol and RS485 interface, facilitating integration with various control systems. SUCH noise sensor module features wide voltage input (4.3-25V), multiple selectable response times (100~400ms), and high resolution (0.1dB), enabling it to quickly and accurately reflect changes in ambient noise. With its compact structure (90×16mm), the sound sensor module is suitable for various noise monitoring scenarios such as dormitories, classrooms, libraries, construction sites, and workshops.

Feature

Employs an A-weighted algorithm for sensitive detection of ambient noise changes, with a rapid and stable response.
Supports Modbus RTU protocol and RS485 interface, easily integrated into various monitoring systems.
Compact size and easy installation, suitable for various scenarios such as dormitories, classrooms, libraries, and construction sites.

Wiring Instruction

Sound sensor module wiring diagram

Specs

Operating Voltage	4.3-25V
Operating Current	19.30mA (@5V)
Interface Type	RS485
Measurement Range	30-130dB
Frequency Range	31.5Hz-8kHz
Weighting Method	A-weighted
Resolution	0.1dB
Accuracy	±1.5dB
Response Time	100ms, 250ms, 300ms, 400ms
Protocol Mode	Modbus RTU, Active, Passive
Byte Format	Default 115200, 8 data bits, 1 stop bit, no parity
Baud Rate	9600, 19200, 38400, 57600, 115200
Operating Temperature	-20~60℃
PCB Size	90×16mm

Application

Library

Window Sound Insulation

Construction Site

FAQ

Q1: Are the measurement results of the noise detection module equivalent to those of a professional sound level meter? ❯

The module uses an A-weighted algorithm, and the measurement results are consistent with human hearing, meeting the needs of environmental noise monitoring. However, due to differences in structure and calibration methods, there may be a slight error compared to a professional sound level meter. It is suitable for trend monitoring or system integration.

Q2: Can the sound sensor detection module be used in outdoor environments? ❯

The module itself is an electronic component and requires a waterproof housing or acoustic windproof cover to be used in outdoor or high-humidity environments.

Q3: What types of sound can the sound sensor detection module detect? ❯

The module is mainly used for sound pressure level detection of environmental noise (such as human voices, mechanical sounds, traffic noise, etc.), without distinguishing between sound sources or types.

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Small Sound Sensor Module, ModbusRTU Protocol

Feature

Wiring Instruction

Library

Window Sound Insulation

Construction Site

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