Does the free downloadable software work on a Mac?

It does not work on MAC. But you must purchase and attempt download to discover this. Would be nice to know before purchasing since this was a primary reason for selecting this device.

What is the diameter of the mouth piece ? can a disposable mouth piece fit on it ?

The mouthpiece has an outside diameter of 1.210 inches, and an inside diameter 0.985 inches. The flow meter kit I received came with three mouthpieces; one blue, one green and one purple. The manual has instructions for cleaning the mouthpiece after each use.

What is the highest reading fpr the microlife?

One reading seems never to exceed 100 and hovers near 60 and the other never exceeds 1.0 and hovers near .8 for me.

Does this product include the factory analysis USB cable?

Obsolete USB? Yes. But no USB to USB-C adapter.

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🚦 Breathe Easy, Stay Ahead: Your Personal Asthma Early Warning System

INSTANT VISUAL ALERTS - Built-in traffic light system gives you immediate, easy-to-understand feedback on your respiratory status.
PLUG PLAY CONVENIENCE - Includes USB interface and batteries, ready to use right out of the box with seamless data transfer.
COMPACT PORTABLE DESIGN - Lightweight 150g device fits perfectly in your bag for on-the-go respiratory health checks.
CLINICALLY TRUSTED ACCURACY - Meets American Thoracic Society standards, ensuring reliable and doctor-recommended measurements.
TRACK YOUR LUNG HEALTH LIKE A PRO - Automatically stores up to 240 peak flow and FEV1 readings for precise monitoring over time.

The Microlife PF 100 Peak Flow Meter is a compact, doctor-recommended spirometry device that measures peak flow and FEV1 to detect early signs of asthma attacks. It automatically stores 240 readings, features a traffic light indicator for quick status checks, and meets rigorous American Thoracic Society accuracy standards. Powered by included AAA batteries and equipped with USB connectivity, it offers reliable, on-the-go respiratory monitoring.

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Brand	Microlife
Model number	PF 100
Colour	multicolour
Item Weight	150 g
Product Dimensions	19.05 x 13.97 x 10.16 cm; 150 g
Batteries	2 AAA batteries required. (included)
Item model number	PF 100
Item Height	4 Inches
Item Width	5.5 Inches
Are batteries included?	Yes
Hardware Interface Type	USB

Microlife PF 100 Peak Flow Meter for Spirometry with FEV1

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