Photosensitive Resistor LDR Light Sensor Module with Digital + Analog Output

The LM393 Photosensitive Light-Dependent Sensor Module uses a high-quality LM393 voltage comparator to provide accurate digital and analog signals. It is easy to install and can detect ambient light intensity with high precision. The module outputs clean signals suitable for microcontroller applications like Arduino and Raspberry Pi projects.

Key Features:

• Adjustable sensitivity via blue digital potentiometer
• Digital switch output (DO) and analog voltage output (AO)
• Easy installation with mounting hole screw
• Detects ambient brightness and light intensity
• Compatible with Arduino, Raspberry Pi, and other microcontroller boards
• Signal output indicator LED for real-time feedback

Specifications:

• Driving ability: 15mA
• Working voltage: 3.3V – 5V
• Adjustable potentiometer for brightness threshold
• Digital output: High/Low logic levels based on light intensity

Working Principle:

When light intensity is below the set threshold, the digital output (DO) is high. When the light exceeds the threshold, the DO output goes low. The analog output (AO) provides continuous voltage proportional to the light intensity, which can be read via an ADC for precise measurements.

Usage:

• Directly drive a relay module via the DO pin
• Can be used as a photoelectric switch
• Analog output can be connected to an ADC module for precise light intensity readings

Interface Pins:

• VCC: Positive power supply
• GND: Ground
• D0: Digital output signal
• A0: Analog output signal

The LM393 Light Sensor Module is perfect for projects involving light detection, automatic lighting, or environmental monitoring. Buy online in Pakistan for Arduino and Raspberry Pi DIY projects today.