Sound Detection Sensor Module

The Sound Detection Sensor Module is a small board with an electret microphone and an onboard comparator that switches a digital output when the sound level goes above a threshold you set with the potentiometer. It lets an Arduino, ESP32 or ESP8266 react to claps, knocks, voices and other loud sounds, and it is a popular part for beginner and robotics projects.

Sound Detection Sensor Module Specifications

• Sensor: electret condenser microphone
• Output: digital (DO), changes state when the sound passes the threshold
• Sensitivity: adjustable with the onboard potentiometer
• Supply voltage: 3.3 V to 5 V
• Connection: header pins for Dupont jumper wires
• Works with: Arduino, ESP32, ESP8266 and other microcontroller digital inputs

Sound Detection Sensor Module Applications

• Clap switches and sound-activated lights
• Noise alarms and sound detection in rooms
• Robots that start, stop or turn when they hear a sound
• Knock and tap detection projects
• STEM classes and sensor kits

What's in the Box

• 1 × sound detection sensor module

Tip: In a quiet room, turn the potentiometer slowly until the output just stops triggering; a clap or knock will then switch it. The module detects how loud a sound is, it does not record audio or recognise words. For 3.3 V boards such as the ESP32, power it from 3.3 V.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.