My Projects

PIR Description
Model	MH-SR505 (HC-SR505)
Manufacturer
Operating voltage	4.5 - 20V
Quiescent Current	60µA
Output level	3.3V
Retriggerable	Y
Delay time	8s
Block time
Board Dimensions	10 x 23mm
Sensor cone angle	< 100º
Sensor range	< 3m
Operation Temperature	-20 to +80ºC
Sensor lens size	10mm

Arduino test code:

#define PIR_MOTION_SENSOR 2  //Pin D2 is connected the module output
#define LED  13  //Assume the Arduino has an LED on D13

void setup() {
  pinMode(PIR_MOTION_SENSOR, INPUT);
  pinMode(LED,OUTPUT);
  digitalWrite(LED,LOW);
}

void loop() {
  int sensorValue = digitalRead(PIR_MOTION_SENSOR);
  if(sensorValue == HIGH)
    digitalWrite(LED,HIGH);
  else
    digitalWrite(LED,LOW);
}