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LDR 5MM LM393 Module – 4 Pin ADC
Compact LDR 5MM LM393 light sensor module with 4-pin ADC and digital output. Ideal for Arduino, IoT, automation, and robotics projects.
The LDR 5MM LM393 Module (4 Pin ADC) is a compact and reliable light-sensing module designed for precise ambient light detection. Built with a 5mm Light Dependent Resistor (LDR) and the LM393 comparator IC, this module converts light intensity into both analog and digital output signals, making it ideal for microcontroller-based projects.
It features an onboard potentiometer for adjustable sensitivity, allowing accurate threshold setting for different lighting conditions. The 4-pin interface ensures easy connection with Arduino, Raspberry Pi, ESP8266/ESP32, PIC, and other development boards.
Perfect for automation, robotics, and IoT applications, this module offers stable performance, low power consumption, and simple integration.
Key Features
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5mm LDR for accurate light intensity detection
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LM393 high-precision voltage comparator
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Analog (ADC) and Digital output support
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Adjustable sensitivity via onboard potentiometer
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LED indicators for power and signal status
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4-pin interface for easy wiring
Applications
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Automatic street light systems
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Light-controlled switches
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Smart home automation
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Robotics and line-following projects
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IoT and embedded system projects

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