- Bluetooth data transmission function
- Accuracy meets American Thoracic Society (ATS) Standard 2005 Revision
- Suitable for hospital or home
- Maximum Records Measurements: 300
- Measuring Parameters: PEF, FEV1
- Measuring Range: volume: 0.01L-9.99L flow: 50 L/min-900L/min
- Accuracy Volume: ±3% or ±0.05L, whichever is greater
- Accuracy Flow: ±10% or 20L/min, whichever is greater