This is a demo store. No orders will be fulfilled.


PIR Sensor, 555-28027


The PIR Sensor detects motion up to 20 feet away by using a Fresnel lens and infrared-sensitive element to detect changing patterns of passive infrared emitted by objects in its vicinity.


Inexpensive and easy to use, it's ideal for alarm systems, motion-activated lighting, holiday props, and robotics applications. The PIR Sensor is compatible with all Parallax microcontrollers; sample BS1, BS2, and SX/B programs and product documentation are available in more information.


  • Detection range up to 20 ft
  • Single bit output
  • Small size makes it easy to conceal
  • Compatible with all Parallax micrcontrollers
  • Low current draw, less than 100 uA

Application Ideas:

  • Alarm Systems
  • Halloween Props
  • Motion-activated lighting


Key Specifications:

  • Power requirements: 3.3 to 5 VDC
  • Communication: Binary output
  • Dimensions: 0.96 x 1.27 in (24.3 x 32.2 mm)
  • Operating temp range: +32 to +158 °F (0 to +70 °C)