Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	GUVA-S12SD
Detection Range	240nm - 370nm
Operating Voltage	3.0V - 5.0V DC
Output Type	Analog Voltage
Peak Sensitivity	365nm
Response Time	< 1 second
Operating Temperature	-20°C to +85°C
Board Dimensions	25mm x 15mm
Interface	3-Pin Header (VCC, GND, OUT)
Application	UV Index Monitoring, Sunlight Detection

6 reviews

Anonymous

Mar 20, 2026

Rating: 5/5

Ideal for plant monitoring

Using this to monitor UV exposure for my greenhouse automation system. It triggers my shade cloths automatically when intensity gets too high. Highly recommended.

Anonymous

Mar 17, 2026

Rating: 4/5

Good sensitivity, needs calibration

The module is very sensitive to UV changes. However, you will need to calibrate the voltage readings against a known source if you need precise scientific data. For hobbyist use, it is excellent.

Anonymous

Mar 16, 2026

Rating: 5/5

Compact and Easy to Use

Small form factor makes it easy to fit into weather station enclosures. Wiring was straightforward, and I got readings immediately upon powering up.

Anonymous

Mar 10, 2026

Rating: 4/5

Great value for money

For the price, you cannot beat this sensor. It helped me complete my final year project on environmental monitoring. Just ensure your ADC resolution is high enough.

Anonymous

Mar 03, 2026

Rating: 5/5

Perfect for Arduino Projects

This sensor works flawlessly with my Arduino Uno. The analog output is stable and correlates well with actual sunlight intensity. Great for building a simple UV index monitor.

Anonymous

Mar 03, 2026

Rating: 5/5

Reliable performance outdoors

I have had this running outside in a protective case for two months. It handles temperature variations well and continues to provide consistent data throughout the day.

5 FAQ

Q: Does the board come with a protective coating?

A: The PCB has a basic conformal coating, but for long-term outdoor use, we recommend placing the sensor inside a waterproof enclosure with a UV-transparent window.

Q: Can this sensor detect UVC light from germicidal lamps?

A: While the sensor has a range of 240nm-370nm, it is primarily optimized for UVA and UVB (sunlight). Detection of specific UVC sources may vary and requires careful calibration.

Q: Is there a library available for ESP32?

A: Since this is an analog sensor, no specific driver library is needed. You simply use the standard analogRead() function available in the ESP32 Arduino core.

Q: Does this module output digital or analog signals?

A: The GUVA-S12SD module outputs an analog voltage signal proportional to the UV intensity detected. You will need an ADC (Analog-to-Digital Converter) to read the value with a microcontroller.

Q: What is the power consumption of this module?

A: The module operates on low power, typically drawing less than 0.5mA during active sensing, making it suitable for battery-powered applications.

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

Digital 38KHz Infrared Receiver Transmitter Head Sensor Module Electronic Building Blocks Robot Infrared Communication Remote Control

$2.29

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