LDR Sensor Module – Light Detection Sensor for Arduino, ESP, and Raspberry Pi (3.3V–5V)

This LDR (Light Dependent Resistor) Sensor Module is ideal for detecting light levels in your environment. It outputs a digital signal when light intensity falls below a threshold, making it perfect for DIY electronics, smart lighting systems, and home automation.

Compatible with 3.3V to 5V logic, it works seamlessly with Arduino, ESP32, Raspberry Pi, and other microcontrollers. The onboard LM393 comparator ensures stable switching, and the sensitivity can be easily adjusted with the built-in potentiometer.

The module is compact, easy to install, and great for beginners and hobbyists. Whether you’re building an automatic street light, a solar tracker, or a security alert system, this sensor is a reliable and low-cost solution.