PIR Motion Sensor Module HC-SR501 – Human Motion Detection

HC-SR501 PIR motion sensor module for detecting movement of people using infrared radiation. Ideal for automatic lighting, security alarms, smart home automation and Arduino or ESP8266 projects.

SKU: SEN-PMSM-3437

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₹150₹299-50%

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Key Highlights

PIR-based motion detection
Digital HIGH/LOW output
Adjustable detection sensitivity
Adjustable output delay
Retriggering mode selection on compatible versions
Suitable for Arduino, ESP8266 and ESP32 projects
Useful for automatic lighting and security alarms
Low-power sensor module for DIY automation

Description

The HC-SR501 PIR (Passive Infrared) motion sensor detects changes in infrared radiation caused by moving people or other warm objects within its sensing area. Its digital output can be connected to compatible microcontrollers such as Arduino, ESP8266 and ESP32 for motion-triggered automation.

The module typically includes adjustable sensitivity and time-delay controls, along with a trigger-mode jumper. It is suitable for DIY security systems, automatic lights, occupancy detection and other motion-based electronics projects. Detection range and timing depend on sensor adjustment, installation position and environmental conditions.

Technical Specifications

General

SKU: SEN-PMSM-3437
Category: Sensors & Modules

Additional Specifications

Module: HC-SR501 PIR motion sensor
Sensor type: Passive Infrared (PIR)
Operating voltage: Typically 5V–20V DC for common HC-SR501 modules; verify the supplied version
Output: Digital HIGH/LOW
Output logic: Typically around 3.3V HIGH
Detection range: Adjustable; commonly up to approximately 7 metres under suitable conditions
Detection angle: Approximately 120°–140°, depending on module and environment
Delay time: Adjustable
Trigger modes: Retriggerable and non-retriggerable on compatible versions
Interface: VCC, OUT and GND
Applications: Motion detection and automation