📌 Product Description

The LDR Light Dependent Resistor Series offers a range of high-quality photoresistors designed to detect and respond to changes in ambient light. These sensors decrease their resistance as light intensity increases, making them ideal for automatic lighting control, smart electronics, DIY projects, home automation, and light-sensitive circuits.

Each model—GL5506, GL5516, GL5528, GL5537, and GL5539—features different sensitivity levels, resistance characteristics, and response curves, allowing you to choose the perfect variant for your specific application. Their compact round design and simple two-pin interface make them exceptionally easy to integrate with Arduino, Raspberry Pi, microcontrollers, and analog circuits.

Whether you’re building a night lamp, solar tracker, streetlight system, or security device, this LDR series delivers stable performance, fast response, and long-lasting durability.

✨ Key Features

• Detects changes in ambient light intensity

• High reliability and long lifespan

• Compact design for easy installation

• Wide sensitivity range (model dependent)

• Simple 2-pin interface for analog input

• Compatible with Arduino, Raspberry Pi, and other controllers

• Ideal for automation and smart-light projects

📦 Common Applications

• Automatic lighting (street lights, night lamps)

• Light-activated switches

• Solar tracking systems

• Smart agriculture

• Security and alarm systems

• DIY electronics and embedded projects

🟦 Available Variants (LDR Models)

• GL5506 – General-purpose, small size

• GL5516 – Higher sensitivity

• GL5528 – Most commonly used, balanced performance

• GL5537 – Higher resistance for low-light detection

• GL5539 – Very high resistance, great for low-light environments