Description Passive Infrared Sensor is used to detect the motion of the object that moves in or out of the sensor’s range. It comes with two trim pots for adjusting the sensitivity and the delay time. You can adjust them according to usage. When the sensor detects someone’s movement in its range then HIGH output is generated otherwise LOW output is generated. You can also observe the real-time readings on the Arduino serial monitor as shown below. When the HIGH output is received by Arduino then the LED will turn on and an AC bulb is also turn on. We use a Relay module here for turning the AC bulb on and off.
