The 1-101021-02 part from Sensirion is an SDP810 Digital Differential Pressure Sensor Module. This module is designed for use in environmental or industrial applications, such as medical ventilators, manometers, liquid level sensing, and flow measurement devices. It is based on the SDP810 Smart DiffP sensor and has a digital I2C output. The module is designed to measure absolute, gauge, and differential air pressure and offers a pressure range of up to +/- 200hPa with a resolution of up to 0,01hPa. The module also has an integrated temperature compensation function with a range of -40°C to 125°C. The SDP810 is small, has a low power consumption, and is easy to integrate into existing systems.