SparkFun Atmospheric Sensor Breakout – BME280Key Features? Operation Voltage: 3.3V? I2C & SPI Communications Interface? Temp Range: -40C to 85C? Humidity Range: 0 – 100% RH, =-3% from 20-80%? Pressure Range: 30,000Pa to 110,000Pa, relative accuracy of 12Pa, absolute accuracy of 100Pa? Altitude Range: 0 to 30,000 ft (9.2 km), relative accuracy of 3.3 ft (1 m) at sea level, 6.6 (2 m) at 30,000 ft.? Incredibly SmallResourcesHookup GuideDatasheet