This part is a kind of semiconductor called BMP280.

Function of this product has Digital Pressure Sensor.

Manufacturers : Bosch

Image and pinout :

Some of the text within the PDF file :

Data sheet BMP280 Digital Pressure Sensor Bosch Sensortec BMP280: Data sheet Document revision Document release date Document number Technical reference code(s) Notes 1.14 May 5th, 2015 BST-BMP280-DS001-11 0273 300 416 Data in this document are subject to change without notice. Product photos and pictures are for illustration purposes only and may differ from the real product’s appearance. Datasheet BMP280 Digital Pressure Sensor Page 2 BMP280 DIGITAL PRESSURE SENSOR Key parameters  Pressure range 300 … 1100 hPa (equiv. to +9000…-500 m above/below sea level)  Package 8-pin LGA metal-lid Footprint : 2.0 × 2.5 mm², height: 0.95 mm  Relative accuracy (950 … 1050hPa @25°C) ±0.12 hPa, equiv. to ±1 m  Absolute accuracy typ. ±1 hPa (950 ...1050 hPa, 0 ...+ [ ... ]

BMP280 PDF Datasheet Download