Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Sensor Type | UV-A/UV-B Photodiode |
| Operating Voltage | 3.3V - 5V DC |
| Output Signal | Analog Voltage (0-3V) |
| Spectral Range | 200nm - 370nm |
| Response Time | < 10ms |
| Interface | 3-Pin Header (VCC, GND, OUT) |
| PCB Dimensions | 32mm x 14mm |
| Mounting Hole Diameter | 3mm |
| Operating Temperature | -20°C to +85°C |
| Application | Sunlight Monitoring, UV Index Measurement |
Anonymous
Mar 29, 2026
Rating: 5/5
Accurate sunlight detection
I compared the readings with a professional handheld UV meter, and the correlation was impressive. This module is a great addition to any solar tracking system.
Anonymous
Mar 23, 2026
Rating: 5/5
Great value for science fair
Bought this for a high school physics project on solar radiation. It was easy to wire up and the data logging worked perfectly. Excellent product for the price.
Anonymous
Mar 22, 2026
Rating: 5/5
Perfect for my weather station project
This sensor module works flawlessly with my Arduino setup. The analog output is stable and correlates well with local UV index reports. Highly recommended for DIY enthusiasts.
Anonymous
Mar 12, 2026
Rating: 4/5
Good sensitivity, easy to integrate
I used this to monitor sunlight exposure for my indoor plants. It picks up changes in light intensity quickly. The only downside is the lack of a digital output option, but the analog signal is sufficient for my needs.
Anonymous
Mar 07, 2026
Rating: 4/5
Solid performance
The response time is very fast as advertised. I noticed slight noise in the output when powered by a noisy USB port, but adding a small capacitor fixed it immediately. Good build quality.
Anonymous
Mar 07, 2026
Rating: 5/5
Reliable and compact
Small form factor makes it easy to mount on mobile robots. I've tested it outdoors under direct sun and cloudy conditions; the readings are consistent and logical.
Q: What is the maximum voltage I can supply to the VCC pin?
A: The module operates safely between 3.3V and 5V DC. Please do not exceed 5V as it may damage the onboard components.
Q: Can this sensor detect UVC light from germicidal lamps?
A: This sensor is primarily optimized for UV-A and UV-B ranges found in sunlight (200nm-370nm). While it may show some response to UVC, it is not calibrated for accurate UVC measurement.
Q: Is there a library available for this specific model?
A: Since this is a generic analog sensor, there is no specific library required. You simply read the analog pin using standard functions like analogRead() in Arduino IDE.
Q: Does this module output digital data via I2C or UART?
A: No, the S12SD module provides an analog voltage output proportional to the UV intensity. You will need an ADC (like those found on Arduino or ESP32) to read the value.
Q: How do I calibrate the sensor for accurate UV Index reading?
A: Calibration requires comparing the sensor's voltage output against a known reference UV meter under controlled sunlight conditions and applying a scaling factor in your code.
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