Microlife Digital Peak Flow Meter with FEV1 & Tracking Software | Reliable & Accurate Respiratory Spirometer for Kids & Adults


The Microlife Digital Peak Flow Meter with FEV1 is the doctor’s choice for managing diseases that restrict lung performance. This advanced meter for spirometry includes a digital diary and measures air flow velocity and volume (FEV1) to indicate early warning signs for impending asthmatic incidents or conditions. Using these measurements in conjunction with a doctor’s consultation allows patients with asthma, COPD and other lung diseases to manage their condition.

What is PEF: PEF is Peak Expiratory Flow, or in other words measures how fast you can push air out of your lungs.

What is FEV: FEV is Forced Expiratory Volume, or in other words measures how much air a person can exhale during a forced breath.

About this item

  • 240 Memories for Children & Adults with Date & Time stamp
  • Peak Flow and FEV1 monitoring for asthma, COPD & other lung diseases
  • Meets American Thoracic Society Standards
  • Stop Light Risk Indicator, Tracking & Analysis software
  • 3 Washable Mouthpieces and Washable Wind Tube – The wind-tube and mouth-pieces are removable for easier cleaning, reconnect fully and blow to take measurements

1 in stock


Brand Microlife
Special Feature Portable
Connectivity Technology USB
Display Type LCD
Color White, Blue

Safety Information

Before you use any product for health care, we advise that you consult your physician or primary healthcare provider and seek the appropriate advice and supervision prior to use.


Peak Flow readings: Accuracy ± 25 l/min or 12% of the reading, whichever is greater
Peak Flow readings: Range ± 0.1 or 50 to 900 l/min.
FEV1 readings: Accuracy ± 0.1 or ± 5% of the reading, whichever is greater
FEV1 readings: Range 0.01 to 9.99
Measurement duration Measures after blowing as a hard/fast as possible into tube, 3 measurements are recommended for best results
Memory Stores 240 readings
Incident risk indicator Default: The readings are programmed to correspond to 80/60/50% of one’s personal best measurement. Customized: Values can be programmed into PEF1 with Windows software for a personalized result.
Electronically independent No phone or connection to the cloud needed, no security concerns about sharing medical data
Cleaning Clean breathing tube and mouthpiece with soap & warm water. Air dry.
Lightweight Will fit into a purse. At 5.3 oz, the meter weighs about as much as a medium apple.

Box Contents:

  • Digital Peak Flow & FEV1 Meter
  • 3 Washable Mouthpieces
  • Tracking and Analysis Software
  • USB Cable
  • Deluxe Storage Case
  • Instruction Booklet in English /Spanish
  • 2 AAA Batteries
  • 15 Traffic Light Risk Indicator Cards