4-Pin Light-Dependent Photosensitive Sensor LDR Module

The 4-Pin Light-Dependent Photosensitive Sensor LDR Module is designed for detecting light presence and measuring ambient light intensity. Using an LM393 comparator with potentiometer-based sensitivity adjustment, this module provides both digital and analog outputs for flexible integration into your projects.

Operating at 3.3V-5V, the module output goes high in the presence of light and low in darkness. The onboard signal LED provides visual status indication, while the adjustable sensitivity allows fine-tuning for different lighting conditions. Perfect for automatic lighting control, light-triggered alarms, and daylight sensing applications with Arduino, Raspberry Pi, and other development boards.