Infrared motion sensor module | Botshop

Infrared motion sensor module


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This is a simple to use Arduino motion sensor. Power it up and wait 1-2 seconds for the sensor to get a snapshot of the still room. If anything moves after that period, the ‘alarm’ pin will go low. This sensor checks for infrared heat in it’s detecting angle. The human body, pets and several other things emit energy that the sensor is looking for, it compares with the snapshot and if there is a recent change it triggers.Specification

  • Type: Digital
  • Supply Voltage:3~5V
  • Current:50μA
  • Working temperature:0℃~+70℃
  • Output level(HIGH):4V
  • Output level(LOW):0.4V
  • Detect angle:110 Degree
  • Detect distance:7 meters
  • Size:28mm×36mm
  • Weight:25g

Example Sketch & Diagram



int pirPin = 8;
int val;

void setup(){

void loop() {
val = digitalRead(pirPin); 
if (val == LOW) {
 Serial.println("No motion"); 
else { 


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