About this item

The Adafruit LTR390 UV Light Sensor Breakout Board is a compact and precise sensor designed for measuring ambient and ultraviolet (UVA) light levels. It features a peak spectral response between 300–350nm for UVA and 500–600nm for ambient light. The sensor communicates via I²C with an address of 0x53, making it compatible with various microcontrollers and single-board computers. Operating on a supply voltage of 3.3V to 5V, it offers a simple interface and includes internal biasing and analog-to-digital conversion, eliminating the need for external components. The breakout board is equipped with a STEMMA QT / Qwiic connector, enabling easy integration into projects without soldering. Ideal applications include UV exposure monitoring, light-based experiments, and wearable devices.