{"product_id":"guva-s12sd-uv-sensor-module-analog-uv-auv-b-detection","title":"GUVA-S12SD UV Sensor Module – Analog UV-A\/UV-B Detection","description":"\u003ch1\u003eGUVA-S12SD UV Detection Sensor Module – Analog UV-A and UV-B Measurement\u003c\/h1\u003e\n\n\u003cp\u003eThe GUVA-S12SD is an analog UV sensor module designed to measure ultraviolet radiation across the UV-A and UV-B spectrum. It outputs a voltage proportional to the intensity of UV light, making it suitable for applications like UV index monitoring, wearable UV exposure trackers, and automated shading systems. With a simple analog interface, it integrates easily with microcontrollers such as Arduino and ESP8266.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSensor Type\u003c\/td\u003e\n\u003ctd\u003eGUVA-S12SD photodiode\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.0V to 5.5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eAnalog voltage (0-1V typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSpectral Range\u003c\/td\u003e\n\u003ctd\u003e240nm to 370nm (UV-A, UV-B)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;1ms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eModule Dimensions\u003c\/td\u003e\n\u003ctd\u003e18.5mm x 15mm (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-indoor-weather-station\"\u003eUV index monitoring station for weather tracking\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eWearable UV exposure reminder bracelet\u003c\/li\u003e\n  \u003cli\u003eAutomatic sunshade or curtain controller\u003c\/li\u003e\n  \u003cli\u003ePlant light optimizer using UV feedback\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThe GUVA-S12SD module works with any microcontroller that supports analog input, such as Arduino Uno, Nano, ESP32, and Raspberry Pi Pico. It draws minimal current, so it can be powered directly from the board’s 3.3V or 5V pin. Common pairings include LCD displays for UV index readout or SD card loggers for long-term data collection.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VCC to 3.3V or 5V, GND to ground, and OUT to an analog input pin (e.g., A0 on Arduino). The output voltage ranges from 0V to around 1V, so you may need a voltage divider or ADC with adequate resolution. No pull-up resistor is required; the signal is directly proportional to UV intensity.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the GUVA-S12SD sensor module connects directly to any Arduino board's analog input. Use a simple analogRead() to get UV intensity values.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan this module measure UV-C radiation?\u003c\/summary\u003e\u003cp\u003eThe sensor's spectral range is 240nm to 370nm, which covers UV-C, but its peak sensitivity lies in UV-A\/UV-B. For precise UV-C detection, a dedicated sensor is recommended.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I convert the analog voltage to UV index?\u003c\/summary\u003e\u003cp\u003eThe output voltage is roughly linear with UV intensity. You can calibrate it using a known UV index source and then map the voltage accordingly in your code.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445004132717,"sku":"CDN-0637","price":210.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/download_79c91700-2991-4ba9-a409-c414122dc8e9.jpg?v=1781525587","url":"https:\/\/compoden.com\/products\/guva-s12sd-uv-sensor-module-analog-uv-auv-b-detection","provider":"Compoden","version":"1.0","type":"link"}