Digital Peak Flow Meter,Home Medical with Tracking Software Manually Recording-Accurate & Reliable Spirometer for Asthma Adult Kids

• High accuracy & High repeatability-Pressure differential sensor applied ensures the high accuracy. No calibration is needed after manufactured. ATS ERS WRIGHT standards provided.
• PEF FEV1 automatically display-Measuring forced expiratory volume of 1 second (FEV1), peak flow rate（PEF). Please blow with proper method, and take a break between each test. Any problem please contact us
• Portable size & Easy your usage-Durable, compact and portable. Easy to clean and disinfect, disposable mouthpiece is not necessary.
• Asthma diary & APP-helps you keep track of how well you are managing your asthma attack. If you have symptoms or asthma attack, record the trigger, the symptoms, and what kind of medicine you used for relief. Professional IT team support. Without bluetooth connection function, need manually recording on App for tracking.
• Applicable for-People looking out for their respiratory health, asthma sufferers, persons with respiratory problems, smokers, sportspersons, athletes, adults and kids above 6.

Product description Click to play video Click to play video 1. Why do the test values vary significantly? 2. How to avoid noticeable deviation test value among each tests? 3. E1 occur while using? Why can't I connect the device to Bluetooth or Sync data to the App? Why there no backlight red, yellow or green?

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