Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Output Signal	Digital Switching Output (0 and 1)
Detection Sensitivity	Adjustable via Potentiometer
Microphone Type	Electret Condenser Microphone
Indicator LED	Yes, signals sound detection
PCB Dimensions	32mm x 16mm
Mounting Hole Diameter	3.0mm
Compatible Platforms	Arduino, Raspberry Pi, ESP32
Response Time	< 10ms
Application Scope	Voice control, Clap switches, Security alarms

6 reviews

Anonymous

Mar 19, 2026

Rating: 5/5

Perfect for my Arduino clap project

This module works exactly as described. The sensitivity adjustment is very responsive, allowing me to tune it specifically for hand claps without triggering on background noise. Easy to wire up.

Anonymous

Mar 12, 2026

Rating: 5/5

Great for beginners

As someone new to electronics, I found this module very forgiving. The LED indicator helps visualize when sound is detected before writing any code. Documentation online is plentiful too.

Anonymous

Mar 07, 2026

Rating: 3/5

Works well in quiet rooms only

The sensor is sensitive, perhaps too sensitive for a noisy workshop. I had to shield the microphone slightly to prevent false triggers from machinery hum. Works great in a quiet home office though.

Anonymous

Mar 07, 2026

Rating: 4/5

Good value but needs calibration

Great little sensor for the price. It took a few minutes to get the potentiometer setting right for my specific room environment, but once set, it has been reliable for my voice-activated light switch.

Anonymous

Mar 05, 2026

Rating: 5/5

Reliable and compact

I bought five of these for a student robotics kit. They are small, lightweight, and the digital output makes interfacing with microcontrollers extremely simple. Highly recommended for education.

Anonymous

Mar 01, 2026

Rating: 4/5

Solid component for prototyping

Used this for a quick prototype of a whistle-activated door lock. The response time is fast enough for real-time applications. Just ensure your power supply is stable to avoid jitter.

5 FAQ

Q: Is the output analog or digital?

A: The primary output is digital (HIGH/LOW). When sound exceeds the adjusted threshold, the DO pin goes LOW. Some versions may have an AO pin for analog reading, but this specific model focuses on digital switching.

Q: What is the maximum distance for detecting a clap?

A: Detection range depends heavily on ambient noise and the sensitivity setting. In a quiet room, a sharp clap can be detected from 3 to 5 meters away. In noisy environments, this range decreases significantly.

Q: Can I use this with a 3.3V logic system like ESP8266?

A: Yes, the module operates on a voltage range of 3.3V to 5V, making it fully compatible with 3.3V logic systems such as the ESP8266 and ESP32 without needing a level shifter.

Q: Does this come with header pins soldered?

A: No, the module typically ships without header pins soldered to allow for flexible mounting options. You will need to solder your own 3-pin headers or connect wires directly to the pads.

Q: Can this module detect specific frequencies or just volume levels?

A: This module primarily detects amplitude (volume) levels exceeding a threshold set by the potentiometer. It does not perform frequency analysis or recognize specific tones like a DSP chip would.

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