The Bosch BME280 is a 3 in 1 ambient sensor that combines humidity, air pressure and temperature measurements. It has a digital I2C and SPI interface.

Technical data – Operating voltage: 1.71 … 3,6 V
– Dimensions (LxWxHx): 15.3 x 11.5 x 2.5 mm

Properties BME280 – air humidity
– Reaction time (t63%) 1s
– Accuracy tolerance ±3 % relative humidity
– Hysteresis = 2% relative humidity
– air pressure
– pressure range 300 …. 1100 hPa (equivalent to +9000 …. -500 m above/below sea level)
– relative accuracy ±0.12 hPa, corresponds to ±1 m (950 …. 1050 hPa @25°C)
– absolute accuracy typ. ±1 hPa (950 …1050 hPa, 0 … 40 °C)
– temperature
– Operating range Operating: -40 … +85 °C
– full accuracy 0 … 65 °C

Delivery incl. pin header