PIR Motion Detector Sensor Module

Description:

A PIR (Passive Infrared) Motion Detector Sensor Module is an electronic device designed to detect motion within its field of view. It operates by sensing changes in infrared radiation emitted by warm-blooded objects, such as humans and animals. When motion is detected, the sensor triggers an output signal, which can be used to activate various devices like alarms, lights, or cameras.   

Key Features:

• Motion Detection: Detects motion within its field of view.   
• Passive Infrared Sensing: Operates by detecting changes in infrared radiation.   
• Wide Field of View: Covers a broad area for motion detection.   
• High Sensitivity: Detects even subtle movements.
• Low Power Consumption: Consumes minimal power, making it energy-efficient.   
• Easy to Use: Simple and straightforward to integrate into various projects.
• Compact Size: Small and lightweight, allowing for easy installation.
• Adjustable Sensitivity: Allows for customization of the sensor's sensitivity.   
• Temperature Compensation: Minimizes false triggers due to temperature fluctuations.   

Specifications (Example):

• Supply Voltage: 5V DC
• Operating Current: <50mA
• Output Signal: Digital (typically 0V/3.3V or 0V/5V)   
• Detection Range: Up to 7 meters 
• Field of View: 110 degrees 
• Response Time: Fast response to motion detection
• Dimensions: Small and compact 

DATA SHEET AND USECASE

Datasheet Overview:

The HC-SR501 module features an onboard pyroelectric sensor, conditioning circuitry, and a dome-shaped Fresnel lens. It operates within a voltage range of 4.5V to 20V, typically at 5V. The module includes two potentiometers for adjusting sensitivity and delay time:

• Sensitivity Adjustment: Modifies the detection range between approximately 3 to 7 meters.
• Delay Time Adjustment: Sets the duration for which the output remains high after motion is detected, ranging from about 5 seconds to 300 seconds.