Adafruit sensiron sht31 d temperature humidity sensor breakout i2c adafruit 2857 p the adafruit sensiron temperature and humidity sensor breakout is highly accurate with plusmn 2 relative humidity and plusmn 0 3 deg c thanks to the sht31 d sensor at its core this versatile chip is factory calibrated and linearised and has on chip temperature and supply voltage compensation add i2c operation up to1mhz with 2 x user selectable addresses and 3 to 5v logic and power compatibility and you