Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Output Type	Digital Switch Output (0 and 1)
Detection Component	GL5528 Photoresistor
Comparator Chip	LM393 Wide Voltage Comparator
Sensitivity Adjustment	Potentiometer Adjustable
PCB Dimensions	32mm x 14mm x 8mm
Mounting Hole Diameter	3.1mm
Interface Pins	4-Pin (VCC, GND, DO, AO)
Compatibility	Arduino, Raspberry Pi, ESP32, STM32
Application Range	Light control switches, camera exposure, brightness monitoring

6 reviews

Anonymous

Mar 22, 2026

Rating: 5/5

Reliable analog and digital output

I appreciate that this module provides both DO and AO pins. The analog output allows for granular brightness readings, not just on/off states. The LM393 comparator is stable and doesn't fluctuate wildly near the threshold.

Anonymous

Mar 22, 2026

Rating: 5/5

Compact and efficient

The small footprint fits perfectly into my compact IoT enclosure. Power consumption is low, which is great for battery-operated projects. The soldering points are large enough for easy wiring.

Anonymous

Mar 20, 2026

Rating: 5/5

Perfect for my Arduino night light project

This sensor module works exactly as described. The potentiometer makes it very easy to calibrate the threshold for when the digital output triggers. I used it to turn on an LED strip when the room gets dark, and it responds instantly.

Anonymous

Mar 06, 2026

Rating: 4/5

Great value, clear documentation needed

The hardware quality is solid for the price. It detected light changes accurately during my university lab test. I deducted one star because the pinout wasn't printed clearly on the back, so I had to look up a datasheet online to be sure.

Anonymous

Mar 05, 2026

Rating: 5/5

Easy to use for beginners

I am new to electronics and this was one of the first sensors I tried with my kids. Connecting it to the breadboard was simple, and the example code found online worked immediately. Highly recommended for learning.

Anonymous

Mar 05, 2026

Rating: 4/5

Good sensitivity range

Using this to monitor sunlight levels for my automated greenhouse shutter system. It handles the transition from dawn to day well. Just make sure to shield it from direct rain if using outdoors, as it is not waterproof.

5 FAQ

Q: What is the response time of the sensor when light changes suddenly?

A: The GL5528 photoresistor typically has a rise and fall time in the range of tens of milliseconds, which is fast enough for most lighting control and environmental monitoring applications.

Q: Does this module output an analog voltage value or just a high/low signal?

A: It provides both! The 'AO' pin gives an analog voltage proportional to light intensity, while the 'DO' pin gives a digital high/low signal based on your potentiometer threshold setting.

Q: Can I connect this directly to a 3.3V microcontroller like an ESP8266?

A: Yes, the module operates on a wide voltage range of 3.3V to 5V, making it fully compatible with 3.3V logic systems like the ESP8266 or ESP32.

Q: Is the photoresistor replaceable if it gets damaged?

A: The photoresistor is soldered onto the PCB. While technically replaceable with soldering skills, it is designed as a sealed module. If damaged, we recommend replacing the entire module for consistent performance.

Q: How do I adjust the sensitivity of the light detection?

A: There is a blue potentiometer on the board. Use a small screwdriver to rotate it clockwise or counter-clockwise while exposing the sensor to your target light level until the indicator LED toggles as desired.

Explore your interests

STC32G12K128 STC8H8K64U Microcontroller Small System Core Board Development Board Emulator

$16.50

Youxin Electronics_STM32H743IIT6 Core Board System Board Learning Board STM32 Development Board

$118.00

Arduino DUE Development Board 32-bit ARM Controller A000062 Italian Official Original Import with Cable

$299.00

Ultrasonic Sensor HC-SR04 Ultrasonic Distance Measuring Module Bracket US015-025-026-100

$3.16

Serial SHT20 Chip Temperature and Humidity Sensor Test, SHT30 Chip Measurement and Monitoring Module by Viter Intelligence

$11.00

High-Speed Yabo Smart Raspberry Pi 4B Motherboard Development Board Accessories RaspberryPi 2G/4G/8G RAM Py

$494.30

Magnetic Circular Counting Chips, Two-Sided Flip Coins for Elementary Math, Kindergarten Early Education, Ten-Frame Matrix, Addition/Subtraction within 10 & 20, Teaching Tools

$11.90

HC-SR501 Human Motion Infrared Sensor Module Compatible with Arduino micro:bit Eco-Friendly

$7.50

SANSI White Label Class A Glass Graduated Cylinder C18 Micro-Precision Demulsification Cylinder with Scale Measurement Includes Certificate Ground Joint Stopper Hexagonal Bottom Borosilicate Glass Lab Equipment

$3.68

EV2400 Battery Unlock Fuel Gauge Programmer MSP430 HPA500 Evaluation Module Interface Board SMBus

$323.00

Cube Three-View Teaching Aid with Grid - 3D Geometry Observation Tool for Grades 4-5 Math (2cm Cubic Blocks Set)

$15.10

OrangePi Orange Pi Zero3 Zero 3 Development Board Allwinner H618 Orange Pi

$228.00

Zave MAX30100 MAX30102 Module for Blood Oxygen, Wrist Heart Rate, Pulse, and Heartbeat Detection

$3.39

12V Stable Version Light-Control Switch No-Light Sensing with Extension Cable Photoresistor Plus Relay Module

$49.20

STM32 Smart Car 51 Microcontroller Arduino Obstacle Avoidance Chassis Kit Mecanum Wheel Robot Car

$40.80

Tech Small Production Small Invention DIY Piano Electronic Keyboard Real Playable Science Small Handmade DIY Materials

$33.00

[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range

$23.65

Transparent 3D Geometric Model Perspective Decomposition Graphic Teaching Aid, Complete Set for Elementary Grades 1-6 Math

$6.80

DHT22 Single-Bus Digital Temperature & Humidity Sensor AM2302 Module Electronic Building Blocks

$10.42

E18-D80NK Infrared Photoelectric Switch Diffuse Reflection Obstacle Avoidance Sensor Module 3-80CM

$12.60

LAN8720 Module Network Module Ethernet Transceiver RMII Interface Development Board Xinwei Electronics

$7.85

STC15W408AS Core Board Minimum System Board 51 Microcontroller Development Board TTSOP20 Learning Board

$18.47

New Version MEGA2560 R3 Development Board, Improved MEGA2560 R3 with Sensor Expansion Board

$13.68

Gradient Visual Illusion Kit: Electric Rotating Assembly Toy for Maker DIY, Paintable Handmade Model

$8.72

51/AVR Microcontroller Core Development Board STC89C52RC/51MCU Experiment Board/ATMEGA32 Learning Board

$37.90

[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set

$15.00

GY-30 302 Digital Light Intensity Illuminance Sensor BH1750FVI Module Light Sensor Ball

$7.41

Foldable Clothes Drying Rack Floor Standing Home Balcony Bedroom Hanging Clothes Quilt Drying Artifact Outdoor Cooling Rod Indoor Drying Rack

$47.10

Metal Detector Module Non-Contact Metal Induction Sensor Detection Module Metal Detector

$8.70

RV1103 Miniature Linux Development Board: RISC-V Vision and AI with Ethernet Port

$53.10

For Arduino Development Board R3 Mainboard Microcontroller Module Kit Programming Learning Board Sensor Suite

$78.00

Xuefen Geometry Stamping and Tracing Set for Grades 1-2, 3D and 2D Ink Pads, Math Learning Tools, Cube and Cuboid Models

$4.51

Rubber Tire Toy 4WD Smart Car Wheels Car Model Robot Accessories (Suitable for 2mm Axle)

$0.50

E18-D80NK Infrared Obstacle Avoidance Sensor Proximity Switch Smart Robot Car 10-80cm

$6.30

OPT3001/3002/3004 Ambient Light Sensor Module Measures Visible Light Density Digital Optical Sensor

$8.14

51 MCU Minimum System STC89C52 DIP40 Through-Hole Smart Car Main Control Board Learning Experiment

$19.80

Outdoor Adventure Kids' Insect Observation Box with Magnifying Glass, Boys & Girls Toy for Exploration, Butterfly Catching and Fish Scooping Tools

$7.80

Risym Laser Head Sensor Module Suitable for Laser Module Expansion Board Laser Sensor Development Board

$2.82

Freeze-Dried Chicken Treats for Dogs: Nutritious Weight-Gain Breast Meat Chunks for Puppies – Teeth Cleaning, Grain Mixing, Universal Use

$3.90

Soil Moisture Sensor Probe Soil Moisture Meter Detection Module Sensor Separate Probe

$2.39