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Introduction :
Keyboard illumination control
Mobile phones
Installation of the Sensor is also the simple task
Motion sensor module PIR (Adjustable Range) Battery holder Introduction :Introduction : Sensors allow you to sense motion, almost always used to detect whether a human has moved in or out of thesensors range. They are small, inexpensive, low power, easy to use and don't wear out. For that reason they arecommonly found in appliances and gadgets used in homes or businesses. They are often referred to as PIR, "PassiveInfrared", "Pyroelectric", or "IR motion" sensors. Everything emits some low level radiation, and the hotter