LDR Module


In stock

  • Light Sensitivity: Measures light intensity with high accuracy.
  • Analog & Digital Outputs: Provides both analog and digital signals.
  • Adjustable Sensitivity: Onboard potentiometer for fine-tuning.
  • Easy Integration: Simple 3-pin connection for microcontrollers.
  • Compact Design: Small size for versatile project use.
  • Versatile Applications: Ideal for automatic lighting, alarms, and smart agriculture.


In stock

The LDR (Light Dependent Resistor) Sensor Module is a versatile component designed to detect and measure light intensity in various applications. Ideal for projects ranging from simple light detection to advanced automation systems, this module offers reliable performance and easy integration with microcontrollers and other electronic systems.

Key Features:

  1. Light Sensitivity: Utilizes a light-dependent resistor (LDR) to measure light intensity accurately. The resistance of the LDR decreases as the ambient light increases, providing a variable output signal proportional to the light level.
  2. Analog Output: Produces an analog voltage output corresponding to the light intensity, allowing for precise measurements and easy interfacing with analog-to-digital converters (ADCs) on microcontrollers.
  3. Digital Output: Equipped with a comparator to provide a digital output signal when the light intensity crosses a predefined threshold. The sensitivity can be adjusted using the onboard potentiometer.
  4. Easy Integration: Designed for seamless connection with microcontrollers like Arduino, Raspberry Pi, and other development boards. Standard 3-pin connectors (VCC, GND, OUT) simplify wiring and setup.
  5. Compact Design: The small and lightweight module can be easily incorporated into various projects without taking up much space, making it ideal for portable and embedded systems.
  6. Adjustable Sensitivity: The onboard potentiometer allows you to fine-tune the sensor’s sensitivity, enabling customization based on specific requirements and environmental conditions.
  7. Versatile Applications: Suitable for a wide range of applications, including automatic lighting systems, light-sensitive alarms, daylight detection, and light intensity monitoring in smart agriculture.


  • Operating Voltage: 3.3V to 5V DC
  • Output Type: Analog and Digital (TTL) outputs
  • Adjustable Sensitivity: Onboard potentiometer for fine-tuning
  • Dimensions: Compact module for easy integration
  • Connector: Standard 3-pin interface (VCC, GND, OUT)


  • Automatic Lighting: Control lighting systems based on ambient light levels, such as streetlights and indoor lighting.
  • Light-Sensitive Alarms: Trigger alarms or notifications when the light intensity crosses a set threshold.
  • Daylight Detection: Monitor natural light levels for energy-saving applications in smart homes and buildings.
  • Smart Agriculture: Measure and monitor light intensity to optimize plant growth conditions in greenhouses and farms.
  • Robotics: Use in robots for light-following or light-avoiding behavior.

Why Choose the LDR Sensor Module?

The LDR Sensor Module is an essential component for any project requiring light detection and measurement. Its dual output (analog and digital), adjustable sensitivity, and ease of integration make it a versatile and reliable choice for a wide range of applications. Whether you’re developing an automatic lighting system, a light-sensitive alarm, or a smart agriculture solution, the LDR Sensor Module provides the accuracy and functionality needed to achieve your project goals.

Enhance your projects with the LDR Sensor Module and explore the possibilities of light-sensitive technology.

Note: Images are for illustration purposes only.

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