Expert4House – Smart Home, Smarter Living
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AirGuard CO₂ is the smart air quality monitor designed for those who want to breathe better at home and work with more concentration. Thanks to Matter over Wi-Fi certification , it integrates simply and stably with Apple Home, Amazon Alexa, Google Home and other compatible platforms, so you can view data and create automations (e.g. start ventilation/purifier when CO₂ rises). The heart of the device is the high-precision NDIR sensor , updated every 5 seconds : you can check CO₂ levels (ppm) in real time and, simultaneously, temperature and humidity , with the option to change the unit (°C/°F). To never miss a peak, AirGuard offers 3 configurable alert methods : audible alarm , indicator light and push notifications via app, with “Do Not Disturb” mode for nighttime or meetings. Plus, it's more than just a "meter": the eWelink app provides you with intelligent suggestions for improving your air quality by combining internal data with your city's outdoor conditions (AQI) . And for those who really want to analyze trends, AirGuard records up to 1 year of historical data for CO₂/temperature/humidity, with graphs and data export : ideal for bedrooms, offices, study rooms and children's rooms, where "tired" air makes itself felt first.
Monitor CO₂ concentration (ppm) in real time and instantly know when it's time to ventilate. The SONOFF AirGuard CO₂ clearly shows you the main ranges (400–1000 ppm = “safe” area, 1000–1500 ppm = caution, over 1500 ppm = high level) so you can quickly improve comfort. Keeping an eye on CO₂ helps reduce the feeling of “stale” air and maintain a more pleasant environment.
Place SONOFF AirGuard CO₂ where it really matters: office, bedroom, nursery, and study . In just seconds, you'll get a clear ppm CO₂ reading on the display, letting you know when it's time to ventilate to improve concentration, sleep, and daily comfort.
Thanks to a larger contact surface with the air , the SONOFF AirGuard CO₂ better intercepts environmental flows and makes the readings more stable and reliable . In practice, you obtain more consistent data on indoor air quality (office, bedroom, study, children's room) and can immediately understand when it's time to ventilate to maintain comfort and concentration.
Thanks to the built-in NDIR sensor , SONOFF AirGuard measures CO₂ with fast response and reliable data to immediately understand when it's time to ventilate. Readings are updated every 5 seconds , with a detection range of 400–5000 ppm and accuracy of ±(50 ppm + 5%) : ideal for monitoring air quality in the bedroom, study, office or children's room , and keeping concentration and comfort under control in a simple and immediate way.
AirGuard CO₂ supports Matter over Wi-Fi , so you can easily add it to your favorite smart ecosystem and control it from the apps you already use: Apple Home , Google Home , Amazon Alexa , SmartThings , and even platforms like Home Assistant (via Matter integration). Pairing is immediate: scan the Matter code and the monitor becomes a “home” device, ready for automations (e.g., alerts/actions when CO₂ exceeds a threshold) and voice control across various rooms.
Note: A compatible Matter Hub is required for Matter integration with third-party apps.
Integrate SONOFF AirGuard CO₂ into the Apple Home ecosystem and manage air quality directly from the Home app: view CO₂, temperature, and humidity values, create automations, and receive quick updates even when you're away. Plus, with Siri , you can ask for the air quality status and take immediate action (for example, opening windows or activating VMC/purifier via scenes).
AirGuard CO₂ doesn't just show you the values: it interprets the room data and compares it with the outdoor air quality index (AQI) to give you practical and personalized suggestions . Depending on the situation, it can advise you, for example, when to ventilate for 10–15 minutes , when to avoid opening windows because the outside air is poor, or when to increase ventilation/activate a purifier.
Set customized CO₂ thresholds and receive immediate alerts the way you prefer: push notifications in the eWeLink app , an audible signal , and an indicator light (also dimmable ) to understand at a glance whether the air is “Safe / Caution / Unhealthy”. Plus, you can adapt everything to your needs with the “Do Not Disturb” mode, so the monitor alerts you when needed without being invasive (perfect for bedrooms, children's rooms, offices, and studies ).
Monitor air quality trends over time with clear and readable graphs: SONOFF AirGuard saves up to 1 year of history for CO₂, temperature, and humidity , displaying minimums, maximums, and averages by period (day/week/month/year). You can also export data from the eWeLink app for more detailed analysis, reports, room comparisons, or to optimize ventilation and daily routines (home, office, children's room, study).
Choose your preferred pairing method: add the device directly in the eWeLink app (scan and connection wizard) or pair it via Matter by scanning the Matter Code with a compatible app/hub. In both cases, setup is straightforward and designed to get you started with monitoring, alerts, and automation right away, without complicated procedures.
When the alarm is activated, to avoid frequent disturbances, the device enters silent mode for 30 minutes after the buzzer is manually deactivated. During this time, the buzzer will not sound even if CO₂ levels remain high. To completely disable the alerts, press the button again and verify that the buzzer icon is off on the screen.
Yes, the device's indicator lights and sounds can be turned off for a specified period.
No, the back of the device has vents for gas detection. Mounting it directly against a wall may affect its accuracy somewhat.
The CO₂ concentration for the SAWF-08P CO₂ detector updates every 5 seconds.
It runs on continuous power via USB-C (Type-C). It is not designed to be a battery-powered device.
It runs on continuous power via USB-C (Type-C). It is not designed to be a battery-powered device.
Standard deliveries to Italy generally take 24-48 hours from the time the package leaves the warehouse.
Orders confirmed by 3:30 PM on weekdays (Monday-Friday) are processed and shipped the same day.
Orders placed after 3:30 PM or on weekends or public holidays will be processed on the next working day.
Yes, we ship internationally to the European Union and several non-EU countries via couriers such as UPS Standard and DHL Express.
For the EU, with UPS Standard the average times are 2-3 working days .
With DHL Express, usually 1-2 business days .
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