Attributes

Brand	-
Category	Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin	-
Sensor Chip	GUVA-S12SD
Detection Range	240nm - 370nm
Operating Voltage	2.5V - 5.0V DC
Output Type	Analog Voltage
Peak Wavelength	365nm
Operating Temperature	-20°C to 85°C
Storage Temperature	-30°C to 95°C
Module Dimensions	32mm x 14mm x 4mm
Interface	3-Pin Header (VCC, GND, OUT)
Net Weight	3.5 grams

5 reviews

Anonymous

Mar 30, 2026

Rating: 4/5

Easy to wire

Simple three-pin connection made it easy for me to get started. Documentation could be more detailed, but there are plenty of tutorials online.

Anonymous

Mar 15, 2026

Rating: 5/5

Perfect for DIY Weather Stations

This module works flawlessly with my Arduino Uno. The analog output is stable and correlates well with local UV index reports. Highly recommended for hobbyists.

Anonymous

Feb 25, 2026

Rating: 5/5

Fast Response Time

I use this for a solar panel tracker. The voltage changes immediately when clouds pass over. Very satisfied with the performance.

Anonymous

Feb 22, 2026

Rating: 5/5

Compact and Reliable

Small form factor fits easily into my enclosure. Power consumption is low which is great for battery-powered projects.

Anonymous

Jan 23, 2026

Rating: 4/5

Good value but needs calibration

The sensor is sensitive and responsive. However, you will need to calibrate it yourself if you want accurate UV index numbers. Great for relative measurements.

5 FAQ

Q: Is the sensor waterproof for outdoor use?

A: No, the module itself is not waterproof. You should house it in a waterproof enclosure with a UV-transparent window for outdoor applications.

Q: Does this detect UVB rays as well as UVA?

A: The GUVA-S12SD sensor primarily detects UVA radiation within the 240nm to 370nm range.

Q: Is this module compatible with 3.3V logic boards like ESP32?

A: Yes, the operating voltage range is 2.5V to 5.0V, so it works perfectly with 3.3V systems.

Q: What is the maximum current consumption?

A: The module consumes very low power, typically less than 10mA during operation.

Q: Is there a specific Arduino library required?

A: No specific library is needed. You can read the output using the standard analogRead() function.

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