Ceiling PIR Motion Sensor for Light and Fan Replacement A compact, lightweight passive infrared motion sensor designed for ceiling mounting in office buildings, schools, and other public buildings. Ideal as a direct replacement for standard light or fan controls, this sensor provides reliable motion detection with adjustable sensitivity for straightforward installation and tuning. Key benefits Simple replacement: Designed to standard ceilingmounted light or fan controls without major rewiring. Compact and lightweight: Small form factor makes handling and installation easy in tight ceiling spaces. Adjustable sensitivity: Builtin sensitivity controls let installers tune detection range and responsiveness to match the space. Reliable PIR detection: Uses passive infrared sensing for consistent detection of human movement. Versatile installation: Suitable for ceilingmounted applications in indoor public spaces and for motion detection in outdoor installations where a ceilingstyle sensor is appropriate. Improves automation: Enables motionactivated control of lights and fans to reduce manual switching and support automated operation. Important attributes Function: Passive infrared motion detection for activation of lights or fans; replaces standard ceilingmounted sensors or controls. Compatibility: Designed for standard ceiling fixtures in offices, classrooms, corridors, restrooms, lobbies, and similar public areas; can existing motion sensors or manual switches for lighting and fan circuits. Size and weight: Small size and lightweight housing for easy mounting inside or near ceiling fixtures. Controls and performance: Adjustable sensitivity settings allow tuning of detection distance and responsiveness to avoid false triggers while ensuring reliable activation when needed. Practical applications Office corridor lighting: Install in ceiling fixtures to provide automatic lighting for hallways, improving convenience and ensuring lights operate only when spaces are occupied. School classroom or restroom control: manual switches or dated sensors to automate lighting or ventilation fans based on occupancy, with sensitivity adjusted to classroom size and traffic patterns. Building entrance or covered outdoor area: Mount in porch or covered entry ceilings to trigger exterior lights or fans when movement is detected, offering hands activation for arrivals and departures. Installation notes Small, lightweight housing and clear sensitivity controls simplify installation and commissioning. Adjust sensitivity during setup to match room size, ceiling height, and typical traffic to minimize false activations. This ceiling PIR motion sensor is a practical, easytoinstall option for upgrading standard light and fan controls in public and commercial buildings where reliable occupancy detection and adjustable performance are required.