SONOFF Air Quality Monitor—AirGuard CO₂

Elevated CO₂ levels can cause drowsiness and poor concentration. Reducing them helps you feel more alert and focused.

More Surface Area, More Precise Data.

A larger gas contact surface makes the detected data more accurate.

High Accuracy & Fast Response

With built-in NDIR Sensor, the CO₂ monitor guarantees an accuracy of ±(50ppm + 5%). The continuous power supply allows for readings to update every 5 seconds.

Works Perfectly with Apple Ecosystem— Fully Supports Siri, iPhone, iPad and Apple Watch.

Hands-Free Air Quality Check

Get an instant answer, no app needed.

Get Tailored Air Quality Advice

It will analyze the CO₂ level in your room and the local Air Quality Index (AQI), and then provide you with more targeted and effective suggestions for improving air quality.

3 Configurable Alert Methods

Receive instant warnings through 3 methods: app notifications, sound and light alarms. Customize your preferences and set a "Do Not Disturb" Mode to avoid being disturbed when you need peace.

Unlock Long-Term Air Quality Insights

Access and export up to 365 days of historical data for CO₂, temperature, and humidity. Visualize trends on intuitive charts to pinpoint the root causes of air quality changes.

Quick Use

Two pairing methods are available for you to choose from. The first is to add a device via the eWeLink APP. The second is to add a device via a Matter-compatible app.