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PIR Motion Detector Sensor Module (Hc-Sr501 Pyroelectric Infrared)



The Passive Infrared Sensor (PIR) sensor module is used for motion detection. It can be used as a motion detector for security systems or robotics. It works on 5V DC and gives TTL output which can be directly given to microcontroller or to relay through a transistor. It consists of a pyroelectric sensor and Fresnel lens that detects motion by measuring the change in the infrared levels emitted by the objects. It can detect motion up to 20ft. This module is very sensitive to change in infrared levels subjected by human movement.

Technical Specifications:

  • Color: White + Green OR  White + Blue
  • Working Voltage Range: DC 4.5V- 20V
  • Current Drain: <60uA
  • Detection Range: <140°
  • Voltage Output: High/ Low-level Signal: 3.3V TTL output
  • Detection Distance: 3 to 7m (can be adjusted)
  • Delay Time: 5 to 200s (Can be Adjusted, Default 5s +/- 3%)
  • Blockade time: 2.5s (Default)
  • Work temperature: -20-+80°C
  • Dimension: 3.2cm x 2.4cm x 1.8cm (Approx.)
  • Sensitive Setting: Turn to Right, Distance Increases (About 7M); Turn to Left, Distance Reduce (About 3M)
  • Time Setting: Turn to Right, Time Increases (About 200S); Turn to Left, Time Reduce (About 5S).
  • Infrared Sensor with Control Circuit Board
  • The Sensitivity and Holding Time Can be Adjusted

Package Includes:

  • 1 Piece- PIR Motion Detector Sensor Module
Weight 20 g
Dimensions 32 × 24 × 26 mm


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SKU: ERMDL004 Category: Tag: