4Pin Photoresistor Light Detection Sensor

Dual Simultaneous Output Signal Telemetry: Features both an Analog Output (AO) pin for continuous light intensity measurements and a Digital Output (DO) pin for direct threshold switching.

Onboard Potentiometer Calibration: Equipped with a precision multi-turn trimmer to easily calibrate light sensitivity and set the exact digital switching trigger point.

Integrated LM393 Voltage Comparator: Employs an LM393 comparator IC to deliver clean, stable digital logic signals with high noise immunity and strong driving capability.

Dual LED Telemetry Indicators: Outfitted with an onboard power LED and a digital switching status LED for instant visual feedback during circuit debugging.

Standard 4-Pin Breadboard Connector: Features a 0.1'' (2.54 mm) pitch 4-pin header (VCC, GND, DO, AO) for solderless connection to microcontrollers and development boards.

Housing & Board Material: High-grade FR-4 glass-epoxy PCB with a light-sensitive cadmium sulfide (CdS) photoresistor element and tinned header pins.

Technical Specifications:

Operating Voltage: 3.3V - 5.0V DC.

Output Signals: Analog Voltage Output (AO) + Digital Switching Output (DO, active low/high).

Product Weight: 0.05 kg.

Color: Blue PCB with Light Blue Potentiometer.

Usage Advice: Connect VCC (3.3V-5V) and GND; wire AO to an analog ADC pin for continuous light mapping, or wire DO to a digital GPIO pin for light threshold alerts.

Maintenance: Keep the photoresistor bulb surface free from dust, oil, or opaque debris; clean gently with a dry cotton swab if contaminated.

Essential Prototyping Light Sensor: Position as a top-selling, versatile light detection breakout module for smart nightlights, solar tracking arrays, automated security alarms, and dark-activation relays.

Highlight Dual Analog & Digital Flexibility: Emphasize how having both AO and DO outputs on a single 4-pin breakout eliminates the need to choose between continuous light graphing and simple threshold switching.

Recommended Cross-Sell Add-ons: Pair with GY-30 BH1750FVI Digital Light Intensity Illumination Sensor Module, TEMT6000 Light 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 4-pin LDR sensor module.