User's Manual

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explained by professional medical personnel. A qualified physician must reassess all
measurements. An interpretation by the medical device is significant only when
considered together with other clinical findings.
 When using the device, pay special attention to the user manual where this symbol
is marked.
4. Installation and use instructions
4.1 Check the equipment list
Check whether the product and its accessories are complete according to the product list in
1.7. If there is any missing or damaged, please contact the after-sales customer service
center in time.
4.2 Equipment installation and preparation
Put the round end of the detachable mouthpiece into the filter of the disposable pulmonary
function tester, then connect it to the breathing hole of the pulmonary function tester, and
apply a little pressure to make the filter and the breathing hole of the device tightly
connected.
Caution:
The user purchases a detachable mouthpiece and a disposable pulmonary function meter
filter, which must be a legally marketed product registered by the FDA.
Mouthpiece specifications: inner diameter 30mm, outer diameter 32-34mm, height
50mm-120mm.
Specification of disposable pulmonary function meter filter: inner diameter 1=30mm
4.3 Equipment use
4.3.1 Boot
Long press the "ON / OFF" button, after the device starts, the display shows the boot
interface, and the device emits a boot prompt sound. After the above actions are completed,
the boot operation is complete.
Caution: