Arduino Infrared proximity switch module

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Infared proximity switch.jpg

Arduino infared proximity switch module is a reflection-type photoelectric sensor which integrates transmitting and receiving infared beams function. Infrared proximity switches work by sending out beams of invisible infrared light. A photodetector on the proximity switch detects any reflections of this light. These reflections allow infrared proximity switches to determine whether there is an object nearby.

technical parameters

  • Voltage :DC 5V
  • Current  :100mA
  • Type :DC 3 Wire NPN-NO (Normal Open)
  • Sensory Distance: 3-80 cm adjustable
  • Sensory distance regulator and output indicator light on product back
  • Control signal level:
  • High:2.3V≤Vin≤5V
  • Low:-0.3V≤Vin≤1.5V


When sensor detect object, output is 0V.

Infared proximity switch1.jpg

Example code

int ledPin = 13; // choose pin for the LED
int inputPin = 2; // choose input pin (for Infrared sensor)
int val = 0; // variable for reading the pin status
void setup() 
pinMode(ledPin, OUTPUT); // declare LED as output
pinMode(inputPin, INPUT); // declare Infrared sensor as input
void loop(){
val = digitalRead(inputPin); // read input value
if (val == HIGH) { // check if the input is HIGH
digitalWrite(ledPin, LOW); // turn LED OFF
} else {
digitalWrite(ledPin, HIGH); // turn LED ON

How to buy it

Click here to buyInfrared proximity switch module