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  1. Portland International Raceway

    Portland International Raceway offers residents and people from throughout the region a place to play — with cars, motorcycles, …

  2. Passive infrared sensor - Wikipedia

    A passive infrared sensor (PIR sensor) is an electronic device that measures infrared (IR) radiation emitted by objects in its field of …

  3. How PIRs Work | PIR Motion Sensor | Adafruit Learning System

    Jan 28, 2014 · PIR sensors are more complicated than many of the other sensors explained in these tutorials (like photocells, FSRs …

  4. PIR Sensor Working Principle, Pin Diagram, Circuit, Arduino Interfacing ...

    Oct 4, 2024 · Learn the PIR sensor working principle, pin diagram, circuit, and Arduino interfacing. This explains how PIR motion …

  5. PIR Sensor: A Complete Guide to Its Meaning, Working Principle, …

    Nov 24, 2025 · PIR Sensor, the full name of which is Passive Infrared Sensor. It is a very common electronic component in modern …

  6. Program Information Report (PIR) - HeadStart.gov

    May 11, 2026 · The Program Information Report (PIR) provides comprehensive data on the services, staff, children, and families …

  7. Who We Are - PIR

    We are a nonprofit, mission-driven organization focused on creating a safe and trusted online home for mission-driven organizations, …

  8. PIR

    You have accessed a U.S. Government information system. There is no expectation of privacy in this system and your usage …

  9. Welcome to PIR [Protein Information Resource]

    Protein Information Resource (PIR) offers a centralized database for protein sequences and functional information, supporting …

  10. Texas Franchise Tax Public Information Report (PIR) and Ownership ...

    Public Information Report Each taxable entity formed as a corporation, limited liability company (LLC), limited partnership, …