PIR Motion Sensor | Real-World Example & How It Works

This small device is called a PIR motion sensor.
It detects movement by sensing the heat from a human body.

In this video, we’ll show how it works and where it's used — like in smart lights, alarms, and home automation projects.
If someone walks into a room, the PIR sensor can send a signal to turn ON lights, a camera, or even trigger an alarm.

It’s perfect for smart DIY projects using Arduino or NodeMCU.
Simple, cheap, and powerful — great for beginners!

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Видео PIR Motion Sensor | Real-World Example & How It Works канала What Exactly!