Digital LDR Light Sensor Module (3Pin-Digital output only)

Description

The LM393 Photosensitive LDR Sensor Module detects ambient light levels using a Light Dependent Resistor (LDR), paired with an LM393 voltage comparator that converts the analog light reading into a clean digital signal once a set threshold is crossed. An onboard potentiometer lets you dial in the exact light sensitivity for your application. The digital output (DO) pin pulls LOW when light levels drop below the configured threshold, making it a straightforward way to trigger light-based events in Arduino and other microcontroller projects.

Product Details

Features

• LDR-based light sensing with LM393 comparator for a clean digital output
• Adjustable sensitivity via onboard potentiometer
• Digital output (DO) switches LOW once the light threshold is crossed
• Onboard power and output indicator LEDs for quick status checks
• Wide 3.3V–5V operating range, compatible with most microcontrollers
• Simple 3-pin interface (VCC, GND, DO)

Applications

• Light/dark-triggered automation and smart lighting
• DIY robotics and light-following projects
• Arduino/microcontroller-based light sensing
• Security and ambient-light alarm circuits

Package Includes

• 1 x LM393 Photosensitive LDR Sensor Module with Digital Output

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