HC-SR501 PIR Motion Detector Sensor Passive Infrared Receiver Module

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HC=SR501 PIR Motion Detector ModuleThis PIR Motion Detector Receiver Module is designed for use with microcontrollers such as Arduino, Digispark, and Raspberry Pi.

It can be used for automatic-on lighting, automatic starting, anti-theft security alarm, and many other motion detection applications.

HC-SR501 Motion Detector Module Pinout


  • Working Voltage: 5V to 20V DC
  • Static (quiescent) current: 65uA
  • Output signal: High level 3.3V, low level 0V
  • Time Delay: Adjustable (0.3s~600s)
  • Blockage time: 0.2s
  • Detectable Area: <120°/7M (max)
  • Sensitivity: Adjustable
  • Operating Temperature: -15° to +70°C
  • PCB Size: 32mm x 24mm (1.27″ x 0.96″)
  • Induction Lens Size (Diameter): 23mm

The time delay adjustment determines how long the output of the PIR sensor module will remain high after motion detection.  The range is from about 3 seconds to ten minutes.

The Sensitivity Adjustment varies the range from approximately 3 to 7 meters.  

The trigger mode selection jumper allows you to select between single and repeatable triggers.  The effect of this jumper setting is to determine when the time delay begins.

  • SINGLE TRIGGER – The time delay begins immediately when motion is first detected.
  • REPEATABLE TRIGGER –  Each detected motion resets the time delay.  Thus the time delay begins with the last motion detected.

HC-SR501 Schematic

Additional Resources:

HC-SR501 Motion Sensor Tutorial on Henry’s Benchhttp://envistia.info/hcsr501tutorial

HC-SR501 review from JohnAudioTech on Youtube: http://envistia.info/youtubehcsr501jat

HC-SR501 Motion Sensor Tested on Chinese Electronic Products Tested blog: https://chinese-electronics-products-tested.blogspot.com/p/hc-sr501-motion-sensor-tested.html

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