DC 12V PIR Motion Sensor with Adjustable Relay Output for Lighting and Security

DC 12V PIR IR Pyroelectric Infrared Module with Adjustable Relay Output Human Body Sensor What this product does Detects human body motion using a pyroelectric infrared sensor. When motion is detected the module activates a relay output that can be used to switch lights, alarms, or control inputs on other devices. Operates from a DC 12V supply for direct compatibility with common low voltage systems. Key benefits Simple integration: Relay output provides a straightforward interface to lighting, security, and automation systems without complex electronics. Adjustable behavior: Builtin adjustments let you tune sensitivity and hold time so the sensor responds as required for the installation and reduces unwanted triggers. Compact and practical: Designed as a small module that fits into control panels, housings, or custom projects where space is limited. Reliable detection: Pyroelectric infrared sensing focuses on human body heat signatures for consistent occupancy and motion detection. Main features Function: Passive infrared detection of human body motion with relay switching output. Power compatibility: DC 12V supply voltage. Output type: Adjustable relay output suitable for switching circuits or providing a trigger signal to controllers. Adjustability: Useradjustable settings to control detection sensitivity and the relay hold time. Form and materials: Compact PCB module with infrared sensor and focusing lens, designed for mounting in enclosures or on panels. Performance: Tunable response to balance prompt detection and false alarm suppression in typical indoor environments. Typical applications Automatic lighting: Turn corridor, stairway, or utility area lights on only when a person is present and off after a set delay. Security and alarm systems: Provide a motion trigger to alarm panels or recorders for human intrusion detection. Home and building automation: Integrate with control systems or microcontrollers to enable presencebased actions such as HVAC control, appliance switching, or scene activation. Installation and usage notes Power with a stable DC 12V supply and connect the relay output to the device or control input you intend to switch. Adjust sensitivity and time delay to match room size and traffic patterns to reduce false triggers. Mount the module with a clear line of sight to the monitored area and avoid direct exposure to heat sources or moving objects that are not human occupants. Why choose this sensor module Provides a practical, adjustable relay interface for human presence detection in a wide range of 12V systems. Compact form and simple wiring make it suitable for retrofit and installations where reliable motiontriggered switching is required.