PIR sensor detects the infrared light radiated by a warm object. It consists of pyro electric sensors which introduce changes in their temperature (due to incident infrared radiation) into electric signal. When infrared light strikes a crystal, it generates an electrical charge. It will detect the motion via positive and negative differential changes in the both halves of the output. It won’t detect decaying light changes(slow moving light waves). There is no need of calibration for daylight.Most PIR sensors have a 3-pin connection at the side or bottom. One pin will be ground, another will be signal and the last pin will be power. Power is usually up to 5V.


  1. Automatic Door Opening System

  2. Security Alarm System.

Shambu R

Good product and service.

Sensor in perfect condition.
Fast shipping.

    Write your review

    PIR Motion Sensor

    PIR Motion Sensor

    A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors.

    Write your review

    Ask a question

    NO registration required!

    If the question you have has not yet been answered here, use the form below to ask something about this addon.

    *(Required to be notified when an answer is available)

    related items

    Join Our Mailing list

    Receive email-only deals, newsletters, special offers & Product updates