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LDR Sensor Module Lm393 Optical Photosensitive



LDR sensor module is used to detect the intensity of light. It is associated with both analog output pin and digital output pin labeled as AO and DO respectively on the board. When there is light, the resistance of LDR will become low according to the intensity of light. The greater the intensity of light, the lower the resistance of LDR. The sensor has a potentiometer knob that can be adjusted to change the sensitivity of LDR towards the light.

Technical Specifications:

  • Input Voltage: DC 3.3V to 5V
  • Output: Analog and Digital
  • Sensitivity adjustable: Yes By Potentiometer
  • Power indicator : (Red) and Output Indicator LEDs.
  • DO digital output interface, a small plate (0 and 1)


  • 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 chip, stable

Package Includes:

  • 1 Piece- LDR  Sensor Module
Weight 10 g
Dimensions 40 × 15 × 6 mm


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SKU: ERMDL002 Category: Tag: