{"title":"Analog UV Light Sensor Breakout - GUVA-S12SD","handle":"analog-uv-light-sensor-breakout-guva-s12sd","url":"/products/analog-uv-light-sensor-breakout-guva-s12sd","description":"An analog UV light sensor breakout based on the GUVA-S12SD photodiode, detecting the 240–370nm range covering UVB and most of the UVA spectrum. An on-board op-amp amplifies the tiny photodiode current to a readable voltage level, making it simple to connect to any microcontroller's analog input.\n\nUnlike more complex I2C UV sensors, this module provides a straightforward analog voltage output — just power it, read the voltage, and convert to UV Index. Power the sensor with 2.7–5.5V DC and read the analog signal from the OUT pin.\n\nKey Features\n\n\nTrue UV Photodiode – Detects 240–370nm (UVA and UVB)\n\nAnalog Output – Simple voltage output, no I2C configuration needed\n\nOn-Board Op-Amp – Amplifies nano-ampere photodiode current to readable voltage levels\n\nWide Supply Range – 2.7V to 5.5V operation\n\nUV Index Conversion – Output voltage ÷ 0.1V = approximate UV Index\n\n\nSpecifications\n\n\nSensor – GUVA-S12SD UV photodiode\n\nDetection Range – 240–370nm (UVA/UVB)\n\nOutput – Analog voltage (Vo = 4.3 × diode current in µA)\n\nSupply Voltage – 2.7V to 5.5V\n\nUV Index Formula – UV Index ≈ Vout ÷ 0.1V\n\n\nIdeal For\n\nUV exposure monitoring and sun safety projects\nWeather stations and environmental data logging\nUV curing and sterilisation monitoring\nArduino and microcontroller sensor projects\n\n\n\nNote: Standard 400nm UV LEDs are outside this sensor's detection range and cannot be used for testing. Use a UV tanning lamp or reptile lamp for testing.\n\n\nPackage Contents\n\n1× GUVA-S12SD Analog UV Light Sensor Breakout\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":13288,"title":"Default Title","sku":"AF-1918","price":13.47,"on_sale":false,"in_stock":true,"available_quantity":100,"option1":"Default Title"}]}