Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Detection Range | Up to 5 meters |
| Sensitivity Adjustment | Potentiometer controlled |
| Output Signal | Digital TTL (High/Low) |
| Microphone Type | Electret Condenser |
| Indicator LED | Yes, for signal detection |
| Mounting Hole Diameter | 3.0 mm |
| PCB Dimensions | 32mm x 16mm |
| Response Time | < 100ms |
| Compatible Platforms | Arduino, Raspberry Pi, ESP32 |
Anonymous
Mar 31, 2026
Rating: 5/5
Responsive and easy to code
The digital output is clean and easy to read with microcontrollers. No complex libraries needed, just a simple digitalRead function. Highly recommend for beginners starting with sensors.
Anonymous
Mar 28, 2026
Rating: 5/5
Excellent for school robotics
Bought this for a high school robotics competition. The team used it to make the robot respond to voice commands. It's lightweight and the mounting holes made it easy to attach to the chassis.
Anonymous
Mar 20, 2026
Rating: 4/5
Good value, needs calibration
Great little module for the price. It took some time to adjust the potentiometer to get the right threshold for whistle detection, but once set, it is very reliable. Just ensure you have a stable 5V supply.
Anonymous
Mar 20, 2026
Rating: 4/5
Solid build quality
The PCB looks professional and the soldering points are clear. I've been running it continuously for a week testing a light switch prototype and it hasn't failed once. Good purchase.
Anonymous
Mar 03, 2026
Rating: 5/5
Perfect for my smart home project
This sensor works exactly as described. I connected it to an Arduino Uno and had it triggering a relay with a simple clap within minutes. The sensitivity pot makes it easy to filter out background noise.
Anonymous
Mar 02, 2026
Rating: 3/5
Works but limited range
The sensor detects sound well up close, but the effective range is closer to 3 meters in a noisy room rather than the advertised 5. Still useful for proximity applications though.
Q: Can I use this outdoors?
A: The module is not weatherproof. If used outdoors, it must be housed in a waterproof enclosure that allows sound to pass through, such as one with a fabric mesh cover.
Q: Can this module distinguish between different types of sounds?
A: No, this is a basic amplitude detector. It triggers based on sound intensity levels, not specific frequencies or voice patterns.
Q: How do I adjust the sensitivity?
A: There is a blue potentiometer on the board. Turn it clockwise to increase sensitivity and counter-clockwise to decrease it while monitoring the LED indicator.
Q: Does this come with connecting wires?
A: No, the package includes only the sensor module. You will need to purchase jumper wires separately to connect it to your microcontroller.
Q: Is this compatible with 3.3V logic boards like the ESP8266?
A: Yes, the module operates on a 3.3V to 5V range, making it fully compatible with 3.3V logic systems without needing a level shifter.
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