Photo Resistor Sensor LDR 12mm

The Photoresistor Sensor LDR 12mm lets you detect and measure light intensity easily in your Arduino, Raspberry Pi, and ESP32 projects. It’s a light-dependent resistor that changes its resistance based on the amount of light falling on it, making it ideal for light-sensing, brightness control, and automatic lighting systems.

This 12mm LDR provides high sensitivity and fast response, enabling you to monitor changes in ambient light accurately. As the light level increases, the resistance decreases — allowing your microcontroller to read different voltage levels for varying brightness conditions.

You can use it for automatic street lights, solar trackers, light meters, and smart home devices. The sensor is compact, durable, and easy to integrate with any analog input pin on a microcontroller.

Because it operates on 3.3V to 5V, it’s compatible with Arduino UNO, ESP8266, ESP32, and STM32 boards.

Key Features:

• Model: Photoresistor Sensor LDR (12mm)

• Type: Light Dependent Resistor

• Diameter: 12mm sensing head

• Operating Voltage: 3.3V–5V DC

• Detects and measures ambient light intensity

• High sensitivity and fast response time

• Easy to connect to analog input pins

• Compatible with Arduino, ESP32, Raspberry Pi, and STM32

• Ideal for light detection, brightness control, and smart automation

The Photoresistor Sensor LDR 12mm helps students, hobbyists, and engineers build smart, responsive, and energy-efficient light-sensing applications with ease.