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asma-1 BT Asthma Monitor

Handheld device with Bluetooth connectivity, for remote Asthma patient monitoring


The Vitalograph asma-1™ is a user friendly electronic respiratory monitor, ideal for monitoring PEF and FEV1 at home, work, in clinical trials, in primary or secondary care.  It offers greater accuracy than mechanical peak flow meters and eliminates the need for paper record cards.

Bluetooth connectivity allows test information and device ID to be stored or shared through Vitalograph Reports or Spirotrac software.

One of our 4000 Series of respiratory monitors and screeners, , the asma-1 BT comes with:

  • Pouch
  • Instructions for use
  • 2 x AAA Batteries
  • Plastic mouthpiece for single patient use
  • Vitalograph Reports Software


Vitalograph provides free certified training for all of its respiratory diagnostic solutions. Register here.

Click here for reimbursement codes for Vitalograph Devices in the USA.

The Bluetooth® word, mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Vitalograph is under license.


Product Code: 40300


  • Measures FEV1 and PEF.
  • Displays % of personal best FEV1.
  • Electronic record – no need for record cards.
  • Set unique ‘personal best’ zones for test subjects.
  • Automatically stores best values in a test session.
  • Quality of blow indicator.
  • 600 test memory.
  • Large, easy to read display.
  • Suitable for use in clinic with Bacterial Viral Filters (BVF™).


asma-1 BT reports include:

  • Information presented in tables and graphs.
  • Customizable report headers.
  • Ability to add comments to the report.
  • Subject ID and name fields.
  • Age, height, gender, and weight fields optional.
Respiratory Monitor asma-1 BT
Dimensions109mm (length) x 63mm (width) x 42mm (height)
Flow Detection PrincipalStator rotor
Back PressureLess than 0.15kPa/L/second @ 14L/s
Measurement RangePEF: 25 – 840 L/min BTPS FEV1: 0 – 9.99 L BTPS
Maximum Test Duration1 second
Quality CheckTime to Peak Flow >120ms or a cough detected in the first second
Power Supply2 x 1.5V AAA batteries
Battery Life3 months of use, 3 tests per day
Performance StandardsATS/ERS 2019 Technical Standards, ISO 23747:2015, ISO 26782:2009
QA/GMP StandardsEN ISO 13485, FDA 21 CFR 820, MDSAP.
PC RequirementsWindows® 7, Windows® 8 or Windows® 10
Auto Power Down Time2 minutes

Product Specification

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FEV1 Ratio
Lung Age
Personal best
PDF Reports
Import Data to SpV


A BVF is recommended if the asma-1 BT is intended for multi-subject use. The plastic mouthpiece supplied with the device can be used where the device is intended for single-subject use. For subject groups with excessive sputum production, a BVF can be used to protect the device flowhead from exhaled particulate matter where this may be a concern.

The (!) appears after a blow if a cough is detected in the 1st second.

If a new BVF is used for every test and the asma-1 BT is stored in a clean, dust free environment, then the device should require only surface cleaning using a 70% isopropyl alcohol wipe. Full instructions available at 4000 Series Cleaning Instructions.

The asma-1 BT needs a supporting App to connect to a phone or tablet. If you have installed an App that supports the asma-1 BT, please contact your App provider to check compatibility with your cell phone/tablet make and model.

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