1. Why do the test values vary significantly?

Usage methods and physical conditions can affect the results. Airflow blockage may cause PEF deviations. 1) Did not inhale deeply or exhale forcefully and correctly; 2) Respiratory muscle fatigue; 3) Leakage from the mouth or nose, etc.

2. How to avoid noticeable deviation test value among each tests?

1）Stand or sit upright before testing 2）Take a deep breath in 3）Exhale forcefully and as quickly as possible 4）Seal the mouthpiece tightly 5）Take a short break between tests to avoid fatigue and ensure accurate results

3. E1 occur while using?

Please restart the peak flow meter. If the E1 problem still persists, please get in touch with us. After confirm, we could send you a replacement.

Why can't I connect the device to Bluetooth or Sync data to the App?

This peak flow meter has no Bluetooth and cannot sync data to the 'ePEF' app. Manually log your readings instead.

Why there no backlight red, yellow or green?

This item do not have backlight. There is a triangular pointing to the red, yellow, or green sections for each test result * No arrow will be displayed on the device without properly setting the expected value.

Nascool Digital Peak Flow Meter Home Medical With Tracking Software

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Description

🌬️ Breathe Better, Track Smarter — Your Lung Health’s New Best Friend

SMART HEALTH TRACKING - Sync your respiratory data effortlessly with the dedicated asthma diary app for proactive management.
COMPACT USER FRIENDLY - Lightweight, portable design with easy cleaning—no disposable mouthpieces needed.
PRECISION YOU CAN TRUST - Pressure differential sensor ensures clinical-grade accuracy without calibration.
FOR EVERY BREATH YOU TAKE - Ideal for asthma sufferers, COPD patients, athletes, and health-conscious adults and kids 6+.
COMPREHENSIVE RESPIRATORY INSIGHTS - Instantly measures Peak Expiratory Flow (PEF) and Forced Expiratory Volume (FEV1) for real-time lung health monitoring.

The Nascool Digital Peak Flow Meter is a compact, highly accurate spirometer designed to measure PEF and FEV1 with clinical precision. Featuring a pressure differential sensor that requires no calibration, it automatically displays key respiratory metrics on an LCD screen. Paired with a dedicated asthma diary app, it empowers users to track symptoms, triggers, and medication usage for proactive asthma and COPD management. Lightweight and easy to clean, it suits adults and children over 6, making it an essential tool for anyone serious about respiratory health.

Reviews

K**D

Good

Nice device

20.06.2026

A**A

device wrong results

i have bought this device for my son he has asthma,It is showing always wrong results and i have tried so many times to connect to my phone but cannot find my phone.... i dont know i think its a waste of money and time i will try to return this device

22.10.2025

M**H

Good product

Nice thing to have to keep eye on asthma. Works as expected.

20.05.2026

V**.

Muy bien medidor

Excelente aparato, descargué la app y aunque no se puede conectar x Bluetooth pones la medición y sirve muy bien

24.05.2026

D**Z

Requiero urgente de la factura

El aparato funciona bien, pero requiero una factura para comprobar ante el seguro de gastos médicos pero no puedo generarla. Necesito su ayuda

4.06.2026

A**R

Easy to use.

Easier to use than the “column tube” ones. Easy to store.

28.06.2026

Z**E

No Bluetooth capability

Will not sync to my phone. No Bluetooth capability. I must manually enter. Easy to use and overall good.

14.05.2026

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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Sold byAmazon Cote D' IvoireDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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ASIN	B09S3KJZZ7
ASIN	B09S3KJZZ7
Brand	Nascool
Customer Reviews	4.3 4.3 out of 5 stars (618)
Customer reviews	4.3 4.3 out of 5 stars (618)
Date First Available	19 April 2022
Item model number	SMPF-2S
Manufacturer	Nascool
Product Dimensions	5.08 x 4.32 x 10.16 cm; 141 g
Units	1 Count

Nascool Digital Peak Flow Meter,Home Medical with Tracking Software (Manually Recording)-Accurate&Reliable Spirometer for Asthma COPD Adult Kids | Home Medical, PEF & FEV1 Measurement, Risk Indicator, LCD Screen, Accurate & Reliable

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