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IR Based Security System

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Infra Red (IR ) sensors are frequently used in security system. They are used in security because we can not see IR rays by our naked eyes. In this circuit we have designed a simple yet useful system which can be used at many places as a security device.

249.00 499.00 incl. GST

Out of stock

Infra Red (IR ) sensors are frequently used in security system. They are used in security because we can not see IR rays by our naked eyes. In this circuit we have designed a simple yet useful system which can be used at many places as a security device. It generates an alarm if any obstacle comes between IR transmitter and reciever. The ir transmitter keeps transmitting IR rays from D2 towards IR reciever D3. Both are directed towards each other in the same line. As soon as any object comes in between these two, no IR rays fall on the IR reciever and its resistance becomes high hence the voltage V3 goes high and transistor and buzzer get turned on.

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