Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Signal | Analog Voltage Output |
| Detection Range | 200nm - 370nm (UVA/UVB) |
| Sensitivity | High Sensitivity with Low Noise |
| Response Time | < 1 Second |
| Interface Type | 3-Pin Header (VCC, GND, OUT) |
| PCB Dimensions | 32mm x 14mm |
| Mounting Hole Size | 3mm Diameter |
| Operating Temperature | -20°C to +85°C |
| Compatibility | Arduino, Raspberry Pi, ESP32, STM32 |
Anonymous
Mar 31, 2026
Rating: 4/5
Good sensitivity, needs calibration
The sensor detects changes in sunlight intensity very quickly. I had to do some manual calibration in the code to get exact readings, but once set up, it performs reliably for my greenhouse monitoring system.
Anonymous
Mar 17, 2026
Rating: 4/5
Reliable for solar tracking
Using four of these to build a dual-axis solar tracker. They respond consistently to light variations. One unit had a slightly noisy output, but swapping the capacitor fixed it immediately.
Anonymous
Mar 12, 2026
Rating: 5/5
Perfect for weather station projects
This UV sensor module works flawlessly with my Arduino-based weather station. The analog output is stable and correlates well with local UV index reports. Very easy to integrate.
Anonymous
Mar 12, 2026
Rating: 5/5
Bulk purchase success
Ordered ten units for our community makerspace workshop. All modules arrived in perfect condition and performed identically during testing. Great value for educational kits.
Anonymous
Mar 04, 2026
Rating: 5/5
Compact and robust
Small form factor makes it easy to fit into tight spaces on my robot chassis. It has survived outdoor testing sessions without any issues. Highly recommended for mobile robotics.
Anonymous
Mar 01, 2026
Rating: 5/5
Great for learning embedded systems
Bought this for a university project on environmental sensing. The documentation was clear enough to get started quickly, and the signal quality is excellent for the price point.
Q: Does this module output digital or analog signals?
A: The S12SD module provides an analog voltage output proportional to the detected UV intensity. You will need an ADC (Analog-to-Digital Converter) pin on your microcontroller to read the data.
Q: What is the power consumption of this sensor?
A: The typical operating current is less than 10mA at 5V, making it suitable for battery-powered applications when combined with sleep modes on the host microcontroller.
Q: Do you provide sample code for Raspberry Pi?
A: Yes, since the output is analog, you will need an external ADC chip like the MCP3008 for Raspberry Pi. Our GitHub repository includes a Python script demonstrating how to connect and read data using that setup.
Q: Can this sensor distinguish between UVA and UVB rays separately?
A: No, this specific module measures the total intensity across the UV spectrum (approx. 200nm-370nm). It does not provide separate readings for UVA and UVB bands.
Q: Is waterproof casing included with the sensor?
A: The module itself is not waterproof and should be protected from direct rain or moisture. We recommend using a separate IP-rated enclosure if deploying it outdoors.
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