Bmp280 sensor, an environmental sensor with temperature, barometric pressure that is the next generation upgrade to the bmp085/bmp180/bmp183. This sensor is great for all sorts of weather sensing and can even be used in both i2c and spi! Pcb size: (lxw)1. 52X1. 20Cm/0. 60"X0. 47" Typical application: enhancement of gps navigation, e. G. Time-to-first-fix improvement, dead-reckoning, slope detection. Indoor navigation floor detection, elevator detection). Outdoor navigation, leisure and sports applications. Weather forecast. Health care application. G. Spirometry). Vertical velocity indication. G. Risk/sink speed). Target devices. Handsets such as mobile phones, table pcs, gps devices. Navigation systems. Portable health care devices. Home weather stations. Flying toys. Watches.