This part is a kind of semiconductor called HRP01.

Function of this product has Relative Pressure Sensor.

Manufacturers : HOPERF

Image and pinout :

Some of the text within the PDF file :

Relative Pressure Sensor System HRP01 Datasheet REV1.0 Relative Pressure Sensor System HRP01 HRP01 Product Summary The HRP01 series is a relative pressure sensor module, The design of pressure sensor in the module is based on mems and IC technology. HopeRF company’s product is cheap but with good quality. The technology assures that the PN junction –10 reverse current is less than 10 A , So that the module is high sensitive, good linear and sensitivity, low tcs and super reliable. Applications _ pulse measuring _ high speed analyzing for small amount material _ breath monitoring system _ breath machine _ pressure switch _ environment control _ liquid level control _ air flow _ filtering monitor _ HAV fan control _ all kinds of leakage detection systems Package Information 1. HRP01 [ ... ]

HRP01 PDF Datasheet Download