Microphone Noise Decibel Sound Sensor Measurement Module 3p / 4p Interface for Arduino - products that work with official Arduino boards

Features:   - This module can be connected to the analog I / O port, - when speaking to the microphone, the analog value will be changed. - A recorder can be made by reading and saving the analog value.
  Specifications:   Brick Type Sensor Brick Brick Interface 3PIN Brick Power Supply 5V Board Size 33 × 14 × 1.6 mm     Parameter Min. Typical Max. Working voltage 4.5 5 5.5 VDC Digital output voltageVCC=5V 0 - 5 V Working current5V - 260 - uA Frequency range 100 - 10000 Hz Sensitivity - -50 - dB
    DEMO: Connect S port of electronic brick of microphone to A0 port of for, and we will use the following program to read the analog value. When the value exceeds the threshold, the LED indicator will flash.   1const int ledPin = 13; // the number of the LED pin 2const int thresholdvalue=400; //The threshold to turn the led on 3void setup() { 4pinMode(ledPin, OUTPUT); 5} 6void loop() { 7 int sensorValue = analogRead (A0); //use A0 to read the electrical signal 8 if(sensorValue>thresholdvalue) 9digitalWrite(ledPin, HIGH); //if the value read from A0 is larger than 400, then light the LED 10 delay (200); 11 digitalWrite(ledPin, LOW); 12} 
Package Included: 1 x  Microphone Noise Decibel Sound Sensor Measurement Module