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 options provide flexibility to optimize device power consumption, resolution and filter performance. A test example uses the default settings for the developer in order to keep the design as simple as possible. BMP280 module, atmospheric pressure sensor module. Module model: GY-BMP280-3.3 Chip used: BMP280 Power supply: 3.3v Communication method: standard IIC/SPI communication protocol Air pressure range: 300-1100hPa Using immersion gold PCB, machine welding process to ensure quality Pin spacing: 2.54mm 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 Specification:5 Set Colour:Purple Material:PCB 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.