Photosensitive resistor sensor KY-018

Light-Dependent Resistor (LDR) Telemetry: Utilizes a cadmium sulfide (CdS) photoresistor to measure changes in ambient illuminance across surrounding environments.

Continuous Analog Signal Output: Generates a variable analog voltage signal proportional to light levels, allowing fine-grained brightness tracking on microcontroller ADC pins.

3-Pin Header Interface: Standard 3-pin configuration (Signal, VCC, GND) enables quick pin-header wiring to microcontrollers and breadboards.

Onboard Voltage Divider Resistor: Includes an integrated 10 kΩ pull-down resistor to form a complete voltage divider circuit right out of the box.

Microcontroller Compatibility: Works with both 3.3V and 5V power rails for integration with Arduino, ESP32, and Raspberry Pi boards.

Housing & Board Material: FR-4 glass-epoxy PCB with a top-mounted CdS photoresistor element and tinned pin headers.

Technical Specifications:

Operating Voltage: 3.3V - 5.0V DC.

Output Signal: Analog Voltage.

Onboard Resistor: 10 kΩ.

Color: Black PCB with Light-Sensitive Sensor Top.

Usage Advice: Connect VCC (3.3V/5V), GND, and Signal (S) to your microcontroller's analog input pin to measure ambient light levels.

Maintenance: Keep the photoresistor surface clean and free of dust or oil; wipe gently with a dry cloth when dirty.

Essential Prototyping Light Transducer: Position as a foundational sensor module for beginner Arduino learning kits, automated nightlights, smart solar tracking systems, and dark-activation triggers.

Highlight Built-In Voltage Divider: Emphasize that the onboard 10 kΩ fixed resistor eliminates the need to wire external breadboard resistors.

Recommended Cross-Sell Add-ons: Pair with 4Pin Photoresistor Light Detection Sensor, GY-30 BH1750FVI Digital Light Intensity Illumination Sensor Module, 5V Photoelectric Resistor Relay Module, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your Light Sensor Module collection page as your standard KY-018 LDR sensor module.