{"product_id":"ml8511-uv-sensor-module-ultraviolet-light-intensity-sensor","title":"ML8511 UV Sensor Module – Ultraviolet Light Intensity Sensor","description":"\u003ch1\u003eML8511 UV Sensor Module – Analog Output, 3.0-5.5V\u003c\/h1\u003e\n\n\u003cp class=\"product-lede\"\u003eThe ML8511 UV sensor module measures ultraviolet light intensity (UVA\/UVB) and outputs an analog voltage proportional to UV exposure, making it ideal for sunlight monitoring in Arduino and ESP32 weather station projects.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable class=\"specs-table\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eSensor IC\u003c\/th\u003e\n\u003ctd\u003eML8511\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eOperating Voltage\u003c\/th\u003e\n\u003ctd\u003e3.0V – 5.5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eOutput Type\u003c\/th\u003e\n\u003ctd\u003eAnalog voltage (0 – ~2.8V)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePeak Sensitivity Wavelength\u003c\/th\u003e\n\u003ctd\u003e365 nm (UVA\/UVB)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUV Range\u003c\/th\u003e\n\u003ctd\u003e280 – 400 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eTypical Sensitivity\u003c\/th\u003e\n\u003ctd\u003e1.0 V per mW\/cm²\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eEnable Pin\u003c\/th\u003e\n\u003ctd\u003eActive HIGH (pull up to VIN)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e15 mm × 12 mm\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\n\u003cstrong\u003eUV Index Display:\u003c\/strong\u003e Arduino Uno reads sensor, shows real‑time UV index on a 16×2 LCD shield.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmart Sunscreen Reminder:\u003c\/strong\u003e ESP32 sends BLE alerts to a phone when UV exposure exceeds a safe threshold.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRaspberry Pi Data Logger:\u003c\/strong\u003e Python script records UV readings to CSV for long‑term sun exposure analysis.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCBSE Physics Practical:\u003c\/strong\u003e Study UV absorption by different materials; fits ATL Tinkering Lab environmental sensing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eB.Tech Final Year Project:\u003c\/strong\u003e Solar UV monitoring drone for precision agriculture (Smart India Hackathon topic).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003ctable class=\"compat-table\"\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePlatform\u003c\/th\u003e\n\u003cth\u003eCompatible\u003c\/th\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003cth\u003eLibrary \/ Method\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Uno R3\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eOUT → A0, EN → D2\u003c\/td\u003e\n\u003ctd\u003eanalogRead(); ML8511 library\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Nano\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eOUT → A0, EN → D2\u003c\/td\u003e\n\u003ctd\u003eanalogRead(); ML8511 library\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eArduino Mega 2560\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eOUT → A0, EN → D2\u003c\/td\u003e\n\u003ctd\u003eanalogRead(); ML8511 library\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eESP8266 NodeMCU\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eOUT → A0, EN → D1\u003c\/td\u003e\n\u003ctd\u003eanalogRead() (0–1V input)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eESP32 Dev Board\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eOUT → GPIO34, EN → GPIO25\u003c\/td\u003e\n\u003ctd\u003eanalogRead(); ML8511 library\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRaspberry Pi Pico\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eOUT → ADC0, EN → GP2\u003c\/td\u003e\n\u003ctd\u003eMicroPython analog read\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRaspberry Pi 4 \/ 5\u003c\/td\u003e\n\u003ctd\u003eYes (with ADC)\u003c\/td\u003e\n\u003ctd\u003eOUT → MCP3008 CH0\u003c\/td\u003e\n\u003ctd\u003ePython spidev; conversion formula\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWiring and Interface Notes\u003c\/h2\u003e\n\u003cp\u003eConnect VIN to 3.3V or 5V (on‑board regulator accepts both), GND to ground, and OUT to any available analog input. Pull the EN pin HIGH to activate the sensor; leave it floating or drive LOW to enter low‑power standby. Use a 3.3V analog reference if your board supports it, because the output typically stays below 2.8V even under direct sunlight.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"faq\"\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003ch3\u003eHow do I convert the analog voltage to UV index?\u003c\/h3\u003e\n    \u003cp\u003eThe sensor outputs a voltage proportional to UV intensity in mW\/cm² (1 V ≈ 1 mW\/cm²). To estimate UV index, multiply the reading by 40, but real accuracy requires calibration with a known reference.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003ch3\u003eCan this sensor detect UV‑C for sterilization monitoring?\u003c\/h3\u003e\n    \u003cp\u003eNo. The ML8511 is sensitive only to UVA and UVB (280–400 nm). It does not respond to UV‑C (100–280 nm) used in germicidal lamps.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"Product\",\n      \"@id\": \"https:\/\/compoden.in\/products\/ml8511-uv-sensor-module-ultraviolet-light-intensity-sensor#product\",\n      \"name\": \"ML8511 UV Sensor Module – Analog Output, 3.0-5.5V\",\n      \"description\": \"ML8511 UV sensor module for Arduino \u0026 ESP32. Analog output measures UV light intensity. Ideal for weather stations, sun monitoring. ₹2200. 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