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Installation Details
This product doesn't require installation
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Introduction: all live objects whose body temperature is more than 0ºc emits the heat in form of infrared radiation through their body. This radiated signals are invisible to human eye. These signals can be detected by using pir sensor which is specially designed for such purpose. In passive infrared (pir) sensor, passive word indicates pir sensor does not generate or radiate any energy for detection purposes. Pir sensors don't detect or measure "heat"; they detect the infrared radiation emitted or reflected from human or animal. Pin description: pin 1 - gnd we have to connect this pin to ground. Pin 2 - output this pin gives output (3. 5V) when the motion is detected. Pin 3 - vcc this pin provides supply voltage (+5v) to pir element and internal circuit. Changing sensitivity and delay time: there are two potentiometers on pir motion sensors board: sensitivity adjust and time delay adjust. It is possible to make pir more sensitive or non sensitive enough. The maximum sensitivity can be achieved up to 6 meters. Time delay adjust potentiometer used to adjust the time period tsel shown in above timing diagrams. Clockwise movement leads pir more sensitive
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