https://www.medsource-sw.com/spirometry-pulmonary/flow-sensor-for-easyone-pro-pro-lab-systems/
Flow Sensor for EasyOne Pro & Pro LAB Systems
The ndd Medical EasyOne PRO/PRO LAB Flow Sensor (#3000-50.5) serves as a replacement if the original sensor becomes worn down or damaged.
easyone pro labflow sensorsystems