HC-SR501 PIR (Passive Infrared) Motion Sensor Module

Description

About this item:

• Operation Principle: It operates by detecting fluctuations in the ambient infrared radiation caused by the movement of warm bodies (like humans) within its detection range.
• Operating Voltage: It functions within a broad DC voltage range of 4.5V to 20V.
• Low Power Consumption: The module is highly energy-efficient, drawing less than 50 µA in quiescent (idle) mode, making it suitable for battery-powered applications.
• Detection Range & Angle: It offers an adjustable detection range of up to 7 meters and a wide detection angle of approximately 120°.
• Adjustability: Features two onboard potentiometers for adjusting both sensitivity (detection range) and delay time (how long the output stays HIGH after detection).
• Trigger Modes: Supports two trigger modes: “Non-repeatable” (single trigger pulse) and “Repeatable” (output stays HIGH as long as motion is detected within the delay period).
• Output Type: Provides a digital output (HIGH: 3.3V, LOW: 0V) that can be directly interfaced with microcontrollers like Arduino or Raspberry Pi, or used to trigger other devices.
• Temperature: Compact in size and capable of operating in a temperature range of -15°C to +70°C.
• Applications: Commonly employed in security systems, automatic lighting, smart home automation, and various other motion-sensing projects