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LDR BASED RELAY BOARD

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LDR BASED RELAY BOARD


Here we are having two Main Parts

Sensor part and Universal Single Relay Board

Sensor Part

Here we used LDR Sensor Board. LDR is a light-controlled variableresistor. Theresistanceof a LDR decreases with increasing incident light intensity; in other words, it exhibitsphotoconductivity. A LDR can be applied in light-sensitive detector circuits, and light- and dark-activated switching circuits.


Universal Single Relay Board

The Single Relay Board can be used to turn lights, fans and other devices on/off while keeping them isolated from your microcontroller. The Single Relay Board allows you to control high-power devices (up to 10 A) via the on-board relay.


Features

  • Control high-power devices up to 7 A with a simple high/low signal.
  • Light Sensitivity Adjustable using POT
  • Provides isolation between the microcontroller and device being controlled.
  • Screw terminals for relay connections.
  • LED indicator used for visual checking.
  • Used in 12 VDC applications.
  • We can use any sensor to this Universal relay Board.(PIR, LDR, Obstacle sensor).


Working Principle

LDR Based Relay Board used to turn on/off circuits, lights, fans, etc when there is change in incident light intensity in LDR Sensor part.

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