LDR Light Sensor Module


  • External 3.3V-5V VCC
  • External GND GND
  • DO digital output interfacea small plate (0 and 1)
  • AO small board analog output interface

How to use:

  • Photosensitive resistor module most sensitive to environmental light intensity is generally used to detect the ambient brightness and light intensity.
  • Module light conditions or light intensity reach the set thresholdDO port output highwhen the external ambient light intensity exceeds a set thresholdthe module D0 output low;
  • Digital output D0 directly connected to the MCUand detect high or low TTLthereby detecting ambient light intensity changes;
  • Digital output module DO  can directly drive the relay modulewhich can be composed of a photoelectric switch;
  • Analog output module AO and AD modules can be connected through the AD converteryou can get a more accurate light intensity value


  • Can detect ambient brightness and light intensity
  • Adjustable sensitivity (via blue digital potentiometer adjustment)
  • Operating voltage 3.3V-5V
  • Output Type
    • Analog voltage output -A0
    • Digital switching outputs (0 and 1) -D0
  • With fixed bolt hole for easy installation
  • Small board PCB size: 3cm * 1.6cm
  • Power indicator (red) and the digital switch output indicator (green)
  • Using LM393 comparator chipstable

1.4 JD
2 JD
In stock

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