The [SparkFun Spectral UV Sensor - AS7331 (SEN-23517)](https://www.sparkfun.com/sparkfun-spectral-uv-sensor-as7331-qwiic.html) and [SEN-23518](https://www.sparkfun.com/sparkfun-mini-spectral-uv-sensor-as7331-qwiic.html) features the AS7331 UV sensor from ams OSRAM©. It measures UV radiation on three channels: UVA (320-400nm), UVB (280-320nm), and UVC (200-280nm) with high sensitivity and accuracy. The three channels on the AS7331 each have individual photodiodes with built-in interference filters. This Mini-sized breakout board is only 0.5in. by 1in. big and has three operating modes: Single Measurement (CMD), Continuous Measurement (CONT), SYNchronized Start (SYNS), and SYNchronized Start & End (SYND), with an automatic power-down sequence between measurements for low current consumption in all three modes.
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