Project 4：Pir Motion Sensor - Keyestudio KS4028 Manual

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Project 4：PIR Motion Sensor
(1)Project Introduction
The Pyroelectric infrared motion sensor can detect infrared signals from
moving objects, and output switching signals. Applied to a variety of
occasions, it can detect movement of human body.
Conventional pyroelectric infrared sensors are much more bigger, with
complex circuit and lower reliability. Yet, this new pyroelectric infrared
motion sensor, is more practical. It integrates a digital pyroelectric infrared
sensor and connecting pins. It features higher sensibility and reliability,
lower power consumption, light weight, small size, lower voltage working
mode and simpler peripheral circuit.
(2)About PIR Motion Sensor:
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