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PIR & Motion Sensor

  • Pirsensor News
  • Reference
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PIR & Motion Sensor

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PIR Sensor for Automotive Child Presence Detection Systems

Introduction With the US Hot Cars Act requiring child presence detection in all new passenger vehicles by the 2028 model year, automotive-grade PIR sensors are becoming a critical component. This article covers the technical requirements and implementation considerations. Regulatory Context…

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  • Buying Guides

Battery-Powered Wireless PIR Sensors: Longest Battery Life

Introduction Wireless PIR sensors offer easy installation, but battery life varies dramatically. Some sensors last months, others years. This guide covers the best battery-powered options. Key Factors Affecting Battery Life 1. Sensor Power Consumption Ultra-low power sensors (Panasonic EKMB, Excelitas…

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Best Ceiling-Mount PIR Occupancy Sensors (2026)

Introduction Ceiling-mount PIR occupancy sensors are the standard for commercial lighting control, offering unobtrusive installation and 360° coverage. With new energy codes requiring occupancy sensors in all commercial spaces, choosing the right ceiling-mount sensor is critical. This guide covers the…

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PIR Sensor for Flame Detection Systems

Introduction Pyroelectric sensors are widely used in flame detectors for industrial safety systems. Unlike motion detection, flame detection relies on sensing the characteristic flicker of flames and their spectral signature. Flame Characteristics Flames from hydrocarbon fires have two key properties…

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  • Buying Guides

Pet-Immune PIR Sensors: Buyer’s Guide

Introduction Pet-immune PIR sensors allow pet owners to keep security systems armed without false alarms. This guide covers the best options for 2026. How Pet-Immune Sensors Work Optical masking: Lens creates detection zones only above a certain height Signal processing:…

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Best High-Sensitivity PIR Sensors for Presence Detection (2026)

Introduction Traditional PIR sensors detect motion, not presence. When a person sits still at a desk, reading, or watching TV, they become invisible. High-sensitivity PIR sensors solve this by detecting micro-movements like breathing, small gestures, and subtle shifts. This guide…

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PIR Sensor for NDIR Gas Detection Applications

Introduction While commonly used for motion detection, pyroelectric sensors are also the heart of Non-Dispersive Infrared (NDIR) gas sensors. This article explains the principles and applications. NDIR Principle NDIR gas sensing works on the principle that many gases absorb infrared…

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  • Buying Guides

PIR Sensors for Arduino Projects: Buyer’s Guide

Introduction With dozens of PIR modules available, choosing the right one for your Arduino project can be confusing. This guide covers the most popular options and when to use each. Popular PIR Modules HC-SR501 – The Classic Price: $2-3 Voltage:…

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Best PIR Sensors for ESP32 and ESP8266 Projects (2026)

Introduction ESP32 and ESP8266 are popular choices for IoT motion sensors due to their built-in Wi-Fi and low-power capabilities. However, choosing the right PIR sensor for these 3.3V boards requires attention to voltage compatibility and power consumption. This guide covers…

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PIR Sensor Temperature Compensation Techniques

Introduction PIR sensors are inherently sensitive to temperature because they detect thermal radiation. Ambient temperature changes can significantly affect performance, causing false triggers or missed detections. This guide covers compensation techniques. How Temperature Affects PIR Sensors Sensitivity Variation Pyroelectric materials…

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