LDR Photosensitive Sensor LDR Photoresistor LDR Module Light Sensor–OKY3105-1

The OKY3105-1 is a light sensor module designed to detect ambient light intensity using a photoresistor (LDR). It provides both digital and analog signal outputs for versatile integration with microcontrollers and other components.

Key Features
- Features an integrated LM393 comparator for stable signal processing.
- Provides dual outputs: a digital (DO) signal and an analog (AO) signal.
- The digital output threshold is adjustable via an onboard potentiometer, allowing you to set a specific light level for switching.
- The analog output provides a variable voltage proportional to light intensity, suitable for precise readings with an Analog-to-Digital Converter (ADC).
- Wide operating voltage range from 3.3V to 5V.

Applications
With its direct connectivity to microcontrollers and relay modules, this sensor is ideal for developing light-activated systems. Common uses include automatic lighting controls, brightness-sensitive alarms, and other projects that need to react to changes in ambient light.