PIR Motion Sensor

PIR Motion Sensor

PIR Motion Sensor
Adafruit Industries | A-000000-01999
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There are lots of projects that use motion detection, and the PIR sensor by Adafruit will allow you to carry them all out quickly, simply and with a minimum of clutter!
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What is a PIR sensor?

PIR (“passive infrared”, “pyroelectric” or “infrared motion”) sensors are used as motion sensors. They can determine whether a human being (and in the case of the Adafruit PIR sensor, an animal) has entered or left the module’s detection area.

Strong, cheap and ultra-compact, these small sensors are frequently used not only to design small electronic objects and gadgets making use of motion detection, but also for prototyping.

PIR Motion Sensor by Adafruit: practical and adaptable

Like all PIR sensors, this motion sensor module designed by Adafruit is extremely easy to use and pretty energy efficient. Better still, it offers a certain flexibility since you can:

  • decrease its power requirements and pass from 5 to 3V (with a few soldering operations to bypass the regulator);
  • adjust the motion sensor’s response time (between 2 and 4 seconds);
  • adjust the module’s sensitivity; and
  • position your sensor as you want thanks to the 30 cm cable with socket also supplied with the PIR sensor.


Technical specifications of the Adafruit PIR Sensor

  • Supply: 5-16V
  • Digital output signal: 3.3V
  • Range: 7 m
  • Detection cone: 120°
  • Adjustable response time (2-4 sec.) and sensitivity
  • 30 cm cable included
    • Length: 24.03 mm
  • Width: 32.34 mm
  • Screw hole distance: 28 mm
  • Screw hole diameter: 2 mm
  • Height (with lens): 24.66 mm
  • Weight: 5.87 g


Resources for the 189 Motion Sensor

Everything you always wanted to know about PIR sensors can be found below!

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