Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Signal Output | Digital Switching Output (0 and 1) |
| Sensitivity Adjustment | Adjustable via Potentiometer |
| Detection Distance | Up to 2 meters (depending on sound intensity) |
| Comparator Chip | LM393 |
| PCB Dimensions | 32mm x 16mm x 8mm |
| Mounting Hole Diameter | 3.0mm |
| Response Time | < 10ms |
| Compatible Platforms | Arduino, Raspberry Pi, STM32, ESP8266 |
| Application Type | Sound Control, Clap Switch, Noise Detection |
Anonymous
Mar 24, 2026
Rating: 4/5
Works well for voice activation
Using this to trigger a simple robot movement upon detecting a specific whistle pattern. It reacts fast enough for real-time applications. Only giving 4 stars because the mounting holes are a bit tight for standard standoffs, but nothing a drill can't fix.
Anonymous
Mar 16, 2026
Rating: 5/5
Perfect for my Arduino clap switch project
This module works exactly as described. The sensitivity adjustment is very responsive, allowing me to tune it so it only triggers on loud claps and not background noise. Wiring was straightforward with clear labels for VCC, GND, DO, and AO.
Anonymous
Mar 13, 2026
Rating: 4/5
Good value but needs calibration
Great little sensor for the price. Out of the box, it was a bit too sensitive, but after turning the potentiometer slightly, it worked perfectly for my home automation prototype. The digital output is clean and stable.
Anonymous
Mar 11, 2026
Rating: 5/5
Excellent for learning electronics
I bought this for a university project involving sound-activated lights. It paired easily with my ESP32 board. The documentation provided in the listing helped me understand the threshold logic quickly. Highly recommended for students.
Anonymous
Mar 07, 2026
Rating: 5/5
Low noise and reliable
As advertised, the noise floor is quite low. I tested it against a cheaper alternative, and this one definitely filters out static better. The build quality of the PCB feels solid, and the soldering points are well-defined.
Anonymous
Mar 01, 2026
Rating: 5/5
Compact and efficient
The size is perfect for embedding into small enclosures. Power consumption is minimal, which is great for battery-operated projects. I've been running it for a week straight without any issues or false triggers.
Q: Does this module provide an analog output as well as digital?
A: Yes, the module features both a Digital Output (DO) for threshold switching and an Analog Output (AO) which provides a raw voltage signal proportional to the sound intensity.
Q: Can this detect human speech clearly for recognition projects?
A: This module detects sound intensity levels rather than processing specific frequencies or words. It is suitable for detecting the presence of speech or claps to trigger an event, but it cannot perform speech recognition on its own.
Q: What is the maximum current draw of this sensor?
A: The module typically draws less than 5mA during operation, making it very energy-efficient for most microcontroller projects.
Q: Will this work directly with a 3.3V logic system like ESP8266?
A: Absolutely. The module operates on a voltage range of 3.3V to 5V, and the digital output is compatible with 3.3V logic levels, so it connects directly to ESP8266 or ESP32 GPIO pins safely.
Q: Is the potentiometer easy to adjust without special tools?
A: Yes, the onboard potentiometer has a standard slot that can be adjusted using a small flat-head screwdriver or even a plastic tuning tool often included with electronics kits.
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