{"title":"Gravity: LTR390 UV Light Sensor (280nm to 430nm) - I2C & UART","handle":"gravity-ltr390-uv-light-sensor-280nm-to-430nm-i2c-amp-uart","url":"/products/gravity-ltr390-uv-light-sensor-280nm-to-430nm-i2c-amp-uart","description":"The Gravity LTR390-UV sensor provides both ambient light and UV sensing with a UV spectral response from 280nm to 430nm. It features high sensitivity, quick response, and strong anti-interference performance.\n\nWith a built-in ADC and MCU, the module converts light data to digital output via I2C or UART interface. It supports programmable interrupt thresholds and adjustable gain settings, making it suitable for UV index monitoring, weather experiments, and light detection projects.\n\nKey Features\n\n\nDual Interface – I2C and UART communication\n\n3.3V & 5V Compatible – Works with a wide range of controllers\n\n13–20 Bit Resolution – Adjustable effective resolution\n\nAdjustable Gain – 1, 3, 6, 9, and 18× settings\n\nInterrupt Function – Programmable upper and lower thresholds\n\nHuman Eye Response – ALS spectral response close to human eye sensitivity\n\n\nSpecifications\n\n\nChip – LTR390-UV-01\n\nOperating Voltage – 3.3V to 5V DC\n\nOperating Current – ~2.73mA (18-bit, 100ms acquisition)\n\nUV Response – 280nm to 430nm\n\nALS Response – 450nm to 700nm\n\nOutput – Digital (I2C / UART)\n\nDimensions – 32 × 27mm (1.26\" × 1.06\")\n\n\nIdeal For\n\nUV index monitoring devices\nOutdoor UV detection\nWeather station experiments\nAmbient light sensing\n\n\nPackage Contents\n\n1× Gravity LTR390-UV Sensor\n1× Gravity 4-pin I2C/UART sensor cable\n\n\nResources\n\nProduct Wiki\nLTR390-UV Datasheet (PDF)\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":1699,"title":"Default Title","sku":"DF-SEN0540","price":13.63,"on_sale":false,"in_stock":true,"available_quantity":206,"option1":"Default Title"}]}