CONTEC SP80B Color Display Spirometer with free PC Software and APP rechargeable Fetal Monitor Get high-quality ECG waveform via

Get high-quality ECG waveform via power frequency filter

This sampling tube is human use

it is 5 pins round connector

P1-P2 Expand Pressure

CONTEC SP80B Color Display Spirometer with free PC Software and APP rechargeable Fetal Monitor Get high-quality ECG waveform viaIntroduction The SPIROMETER is a hand held equipment for checking lung conditions, adopts the infrared signal acquisition mode for measuring items related to FVC, and it is applicable for hospital, clinic, family for routine test. Functions Forced Vital Capacity (FVC), forced expiratory volume in one second (FEV1) to forced vital capacity (FVC) ratio (FEV1 FVC), peak expiratory flow (PEF), forced expiratory flow at 25 % of FVC (FEF25), forced