PIR Sensor (Rev A)

  • 910-28027: PIR Sensor Rev A
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Product ID 910-28027


The PIR (Passive Infra-Red) Sensor is a device that detects motion by measuring changes in the infrared (heat) levels emitted by surrounding objects. When motion is detected the PIR Sensor outputs a high signal on its output pin. This logic signal can be read by a microcontroller or trigger a MOSFET which could switch high voltage devices. This is a good sensor for monitoring an area for motion.

Both revisions of this sensor use the same Fresnel lens, and basic functionality remains the same between the two (for example you can use the same test programs). However, there were a number of improvements and updates made to Revision B, and if using Revision A in your project the following information should be noted and used.

Key Features:

  • Detection range up to 20 feet away       
  • Single bit output  
  • Jumper selects single or continuous trigger output mode  
  • 3-pin SIP header ready for breadboard or through-hole project  
  • Small size makes it easy to conceal  
  • Compatible with BASIC Stamp, Propeller, and many other microcontroller

Application Ideas:

  • Monitor an area for security
  • Motion-activated lighting system
  • Holiday animated props

Note: Driving an external load requires a transistor or MOSFET


  • Detection range up to 20 ft. away
  • Power Requirements: 3.3 to 5 VDC; >3 mA (may vary)
  • Communication: Single bit high/low output
  • Dimensions: 1.27 x 0.96 x 1.0 in (32.2 x 24.3 x 25.4 mm)
  • Operating temp range: 32 to 122 °F (0 to 50 °C)

Downloads & Documentation

Download Details More Info
PIR Sensor Rev A Documentation - 92.38 KB | updated: 21 Sep 2012 - 12:26 pm
PIR Sensor (Rev A) BASIC Stamp Demo Code - 1.87 KB | updated: 21 Sep 2012 - 12:27 pm

Additional Resources