Attributes

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

6 reviews

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.

5 FAQ

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.

Explore your interests

STC32G12K128 STC8H8K64U Microcontroller Small System Core Board Development Board Emulator

$16.50

Youxin Electronics_STM32H743IIT6 Core Board System Board Learning Board STM32 Development Board

$118.00

Arduino DUE Development Board 32-bit ARM Controller A000062 Italian Official Original Import with Cable

$299.00

Ultrasonic Sensor HC-SR04 Ultrasonic Distance Measuring Module Bracket US015-025-026-100

$3.16

Serial SHT20 Chip Temperature and Humidity Sensor Test, SHT30 Chip Measurement and Monitoring Module by Viter Intelligence

$11.00

High-Speed Yabo Smart Raspberry Pi 4B Motherboard Development Board Accessories RaspberryPi 2G/4G/8G RAM Py

$494.30

Magnetic Circular Counting Chips, Two-Sided Flip Coins for Elementary Math, Kindergarten Early Education, Ten-Frame Matrix, Addition/Subtraction within 10 & 20, Teaching Tools

$11.90

HC-SR501 Human Motion Infrared Sensor Module Compatible with Arduino micro:bit Eco-Friendly

$7.50

SANSI White Label Class A Glass Graduated Cylinder C18 Micro-Precision Demulsification Cylinder with Scale Measurement Includes Certificate Ground Joint Stopper Hexagonal Bottom Borosilicate Glass Lab Equipment

$3.68

EV2400 Battery Unlock Fuel Gauge Programmer MSP430 HPA500 Evaluation Module Interface Board SMBus

$323.00

Cube Three-View Teaching Aid with Grid - 3D Geometry Observation Tool for Grades 4-5 Math (2cm Cubic Blocks Set)

$15.10

OrangePi Orange Pi Zero3 Zero 3 Development Board Allwinner H618 Orange Pi

$228.00

Digital 38KHz Infrared Receiver Transmitter Head Sensor Module Electronic Building Blocks Robot Infrared Communication Remote Control

$2.29

12V Stable Version Light-Control Switch No-Light Sensing with Extension Cable Photoresistor Plus Relay Module

$49.20

STM32 Smart Car 51 Microcontroller Arduino Obstacle Avoidance Chassis Kit Mecanum Wheel Robot Car

$40.80

Tech Small Production Small Invention DIY Piano Electronic Keyboard Real Playable Science Small Handmade DIY Materials

$33.00

[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range

$23.65

Transparent 3D Geometric Model Perspective Decomposition Graphic Teaching Aid, Complete Set for Elementary Grades 1-6 Math

$6.80

DHT22 Single-Bus Digital Temperature & Humidity Sensor AM2302 Module Electronic Building Blocks

$10.42

E18-D80NK Infrared Photoelectric Switch Diffuse Reflection Obstacle Avoidance Sensor Module 3-80CM

$12.60

LAN8720 Module Network Module Ethernet Transceiver RMII Interface Development Board Xinwei Electronics

$7.85

STC15W408AS Core Board Minimum System Board 51 Microcontroller Development Board TTSOP20 Learning Board

$18.47

New Version MEGA2560 R3 Development Board, Improved MEGA2560 R3 with Sensor Expansion Board

$13.68

Gradient Visual Illusion Kit: Electric Rotating Assembly Toy for Maker DIY, Paintable Handmade Model

$8.72

51/AVR Microcontroller Core Development Board STC89C52RC/51MCU Experiment Board/ATMEGA32 Learning Board

$37.90

[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set

$15.00

GY-30 302 Digital Light Intensity Illuminance Sensor BH1750FVI Module Light Sensor Ball

$7.41

Foldable Clothes Drying Rack Floor Standing Home Balcony Bedroom Hanging Clothes Quilt Drying Artifact Outdoor Cooling Rod Indoor Drying Rack

$47.10

Metal Detector Module Non-Contact Metal Induction Sensor Detection Module Metal Detector

$8.70

RV1103 Miniature Linux Development Board: RISC-V Vision and AI with Ethernet Port

$53.10

For Arduino Development Board R3 Mainboard Microcontroller Module Kit Programming Learning Board Sensor Suite

$78.00

Xuefen Geometry Stamping and Tracing Set for Grades 1-2, 3D and 2D Ink Pads, Math Learning Tools, Cube and Cuboid Models

$4.51

Rubber Tire Toy 4WD Smart Car Wheels Car Model Robot Accessories (Suitable for 2mm Axle)

$0.50

E18-D80NK Infrared Obstacle Avoidance Sensor Proximity Switch Smart Robot Car 10-80cm

$6.30

Digital 38KHz Infrared Receiver/Transmitter Head Sensor Module for Electronic Building Blocks Robots, Infrared Communication Remote Control

$2.80

51 MCU Minimum System STC89C52 DIP40 Through-Hole Smart Car Main Control Board Learning Experiment

$19.80

Outdoor Adventure Kids' Insect Observation Box with Magnifying Glass, Boys & Girls Toy for Exploration, Butterfly Catching and Fish Scooping Tools

$7.80

MPU-9255 9-Axis Attitude 3-Axis Electronic Compass Accelerometer Gyroscope Magnetic Field Sensor Module

$13.42

Freeze-Dried Chicken Treats for Dogs: Nutritious Weight-Gain Breast Meat Chunks for Puppies – Teeth Cleaning, Grain Mixing, Universal Use

$3.90

Soil Moisture Sensor Probe Soil Moisture Meter Detection Module Sensor Separate Probe

$2.39