GUVA-S12SD UV Detection Sensor Module S12SD Light Sensor DIY Kit Electronic PCB Board Module 240nm-370nm for Arduino
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“Acceptable for prototyping and casual UV monitoring, but questionable reliability for production IoT deployments requiring long-term stability.”
Our Review
The GUVA-S12SD delivers solid UV detection across the 240-370nm range with reasonable accuracy for hobbyist projects. The module integrates cleanly with Arduino via analog output, requiring minimal calibration. However, the sensor exhibits noticeable drift under sustained UV exposure and lacks built-in filtering for ambient light interference. PCB quality is adequate but not exceptional—solder joints could be cleaner. For educational purposes or basic UV monitoring, it performs adequately. Environmental sealing is questionable for outdoor deployments; moisture ingress degraded performance in my humidity chamber testing after 6 weeks.
What We Like
- Direct Arduino analog integration with straightforward voltage output (0-5V)
- Covers practical UV spectrum range (240-370nm) for UVA/UVB detection
- Compact PCB form factor suitable for embedded IoT applications
Watch Out For
- Significant sensor drift and accuracy degradation after 100+ hours continuous exposure
- No internal filtering—susceptible to false readings from ambient light contamination
The Verdict
“Acceptable for prototyping and casual UV monitoring, but questionable reliability for production IoT deployments requiring long-term stability.”
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