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 battery-powered devices such as mobile phones, GPS modules, and watches. The BMP280's proven piezoresistive pressure sensor technology offers high accuracy, linearity, long-term stability, and high robustness. It provides flexibility to optimize power consumption, resolution, and filter performance. A test example uses default settings to keep the design simple. 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: 300–1100 hPa Uses immersion gold PCB with machine welding process for quality Pin spacing: 2.54 mm Module size: 11.5 mm x 15 mm Typical applications: GPS precise navigation (dead reckoning, bridge detection, etc.), indoor and outdoor navigation Weather monitoring for sports and healthcare Vertical speed indication (rise/sink speed), fan power control Color: Purple Material: PCB Size: 11.5 mm x 15 mm Package Contents: 10 x Barometric Pressure Sensor Module 10 x Pin header Note: Light reflection and display differences may cause slight color variation from the actual product. Measurement error allowance: +/- 1–3 cm.