1. The BMP280 is the next generation upgrade to the BMP085 / BMP180 / BMP183, great for all sorts of weather sensing and can even be used in both I2C and SPI 2. Pressure range: 300 - 1100hPa ( altitude: -500m to 9000m ) 3. Working voltage: 1.7 - 3.6V DC 4. Low power consumption: 4uA 5. High precision: the resolution is 0.06hPa ( 0.5 meters ) at low-power mode 6. Product has temperature output 7. Communication interface: I2C or SPI 8. Typical application: GPS precise navigation ( dead reckoning, the upper and lower bridge detection ), indoor and outdoor navigation, weather forecast, the vertical velocity indication ( rise / sink speed ) 9. Note: you need to add 5V to 3.3V level converter circuit between Arduino UNO R3 and the module
