Photoresistor/LDR Light Sensor Module

CreateLabz StoreSKU: 20-068


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  • Photoresistors, also known as light-dependent resistors (LDR), are light sensitive devices most often used to indicate the presence or absence of light or to measure the light intensity.
  • In the dark, their resistance is very high, sometimes up to 1MΩ, but when the LDR sensor is exposed to light, the resistance drops dramatically, even down to a few ohms, depending on the light intensity.
  • LDRs have a sensitivity that varies with the wavelength of the light applied and are nonlinear devices.
  • The module can also be used to measure light intensity and allows for easy sensing of light levels for you microprocessor projects.


  • KY-018 : LDR breakout board
  • Voltage : 3.3v to 5v
  • Output : Analog
  • Pin: 3 Pins
  • PCB size : 19mm x 15mm

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