Monaghan Aero Vent Plus Collapsible Holding Chamber Measures Body Temperature and Truzone Pfm Measures PEF.

• PEF the fastest speed at which air is forced out of your lungs after taking a deep breath.
• Useful in detecting changes in airways that could signal a worsening of symptoms or an improvement in breathing for people with respiratory conditions such as asthma or emphysema.
• TruZone PFM comes with ColorZone tape system to mark last best reading.
• Daily Record included is sized to match to the numbers on the TruZone PFM.