BME280 is a Breakout Board featuring a Barometric Pressure Sensor TEC. BME280 Temperature, Humidity & Pressure Sensor.
The breakout has selectable I2C address jumper (solder link GS2), I2C pull-up resistors, 7 pin header 2.54mm, and two mounting holes 3.5mm.
It uses both I2C and SPI (supports 3-, 4-wire SPI) interface
Default setting of the board; single power rail Vdd=Vdd_IO (solder link GS1), pull-ups resistors (R2, R3) 10k, protocol selector resistor 0ohm (R1), decoupling capacitors 0.1uF on both power supply pins Vdd & Vdd_IO.
If you connect board to both power rails VDD_IO 1.8V and VDD 3.3V be sure to remove the power rail jumper GS1.

Specifications:
Supply Voltage: 1.8 - 5V DC
Interface: I2C (up to 3.4MHz), SPI (up to 10 MHz)

Operational Range:
Temperature: -40 to +85°C
Humidity: 0-100%
Pressure: 300-1100 hPa

Resolution:
Temperature: 0.01°C
Humidity: 0.008%
Pressure: 0.18Pa

Accuracy:
Temperature: +-1°C
Humidity: +-3%
Pressure: +-1Pa

I2C address:
SDO LOW: 0x76
SDO HIGH: 0x77

Applications
Context awareness, e.g. skin detection, room change detection
Fitness monitoring / well-being
Warning regarding dryness or high temperatures
Measurement of volume and air flow
Home automation control. Control heating, ventilation, air conditioning (HVAC)
GPS enhancement (e.g. time-to-first-fix improvement, dead reckoning, slope detection)
Indoor navigation (change of floor detection, elevator detection)
Outdoor navigation, leisure and sports applications
Weather forecast
Vertical velocity indication (rise/sink speed)

Package included:
2pcs BME280 5V Temperature Humidity Sensor Atmospheric Barometric Pressure Sensor with IIC I2C Breakout for Arduino