The BMP280 barometric pressure sensor is designed for mobile applications.The sensor module is available in a very compact package.Its small size and low power consumption allow implementation in devices such as battery-powered mobile phones, GPS modules or watches. The BMP280's proven piezoresistive pressure sensor technology offers high accuracy, linearity, long-term stability and high EMC robustness.Many device operating provide flexibility to optimize device power consumption, resolution and filter performance.A test example uses the default settings for the in order to keep the design as simple as possible. BMP280 module, atmospheric pressure sensor module Module model: -BMP280-3.3 Chip used: BMP280 Power supply: 3.3v Communication : standard IIC/SPI communication protocol Air pressure range: 300-1100hPa Using immersion gold PCB, machine welding process to quality Pin spacing: 2.54mm Module size: 11.5mm Z 15mm Typical application: GPS precise navigation (dead reckoning, upper and lower bridge detection, etc.) indoor and outdoor navigation Monitoring weather forecast for leisure, sports and health care Vertical Speed Indication (Rise/Sink Speed) Fan Power Control Colour:Purple Material:PCB Size: 11.5mm x 15mm Package Contents: 5 x Barometric Pressure Sensor Module 5 x pin Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/- 1-3cm.