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PIR Sensor - Full Device Information

Department :E C E
Semester :3
Subject Code :GENERAL
Subject Name : 
Study Material Description : PIR SENSOR IS USED TO DETECTED HUMAN 

The PIR (Passive Infra-Red) Sensor is a pyroelectric device that detects motion by measuring changes in the infrared (heat) levels emitted by surrounding objects. This motion can be detected by checking for a sudden change in the surrounding IR patterns. When motion is detected the PIR sensor outputs a high signal on its output pin. This logic signal can be read by a microcontroller or used to drive a transistor to 
switch a higher current load.

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