Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Detection Range | Approx. 3 meters |
| Output Signal | Digital Switching Output (0 and 1) |
| Sensitivity Adjustment | Adjustable via potentiometer |
| Microphone Type | Electret Condenser Microphone |
| Indicator LED | Yes, indicates sound detection |
| PCB Dimensions | 32mm x 16mm x 8mm |
| Mounting Holes | 4 x 3mm diameter holes |
| Response Time | < 10 milliseconds |
| Compatibility | Arduino, Raspberry Pi, ESP32 |
Anonymous
Mar 31, 2026
Rating: 5/5
Simple and effective
Used this to add voice control to an old lamp. The range is decent for a small room. It's not going to replace a high-end smart speaker, but for simple on/off switching based on sound levels, it is perfect.
Anonymous
Mar 30, 2026
Rating: 5/5
Perfect for my Arduino project
This sensor module works exactly as described. I used it to create a clap-activated light switch for my workshop. The sensitivity adjustment knob makes it very easy to fine-tune so it doesn't trigger on background noise.
Anonymous
Mar 23, 2026
Rating: 5/5
Reliable sound detection
I bought three of these for a robotics project. All three worked out of the box. The digital output is clean and interfaces easily with microcontrollers. Highly recommended for students and makers.
Anonymous
Mar 21, 2026
Rating: 5/5
Bulk buy for our class
Purchased a dozen for our weekend workshop. Every single unit functioned correctly. The build quality is solid for the price point. Students were able to get their whistle-switch projects working within an hour.
Anonymous
Mar 14, 2026
Rating: 4/5
Good value, needs calibration
Great little module for the price. It took me a few minutes to get the potentiometer setting right, but once calibrated, it detects whistles and claps reliably. Documentation could be slightly better, but plenty of tutorials online.
Anonymous
Mar 08, 2026
Rating: 4/5
Easy to use for beginners
As someone new to electronics, I found this very easy to wire up. The pins are clearly labeled. Just remember you need a pull-up resistor if your specific board requires it, though most have them built-in.
Q: Can this distinguish between different sounds like a dog bark vs. a human voice?
A: No, this module only detects sound intensity (volume) above a certain threshold. It cannot analyze frequency patterns to distinguish between specific types of sounds.
Q: What is the maximum distance it can detect a clap?
A: In a quiet environment, the sensor can typically detect a sharp clap from about 3 to 5 meters away. This varies based on the sensitivity setting and ambient noise levels.
Q: Is there a library available for Arduino?
A: Since this is a simple digital switch module, it does not require a specific complex library. You can read the pin state using the standard digitalRead() function in Arduino IDE.
Q: Does this module output analog or digital signals?
A: This module provides a digital switching output (High/Low). It does not output the raw analog audio waveform, but rather a triggered signal when sound exceeds the threshold you set.
Q: Can I power this directly from a 9V battery?
A: No, the operating voltage is 3.3V to 5V DC. Connecting it directly to a 9V battery may damage the module. Please use a voltage regulator or a 5V power source.
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