SONOFF AirGuard CO₂ (SAWF-08P) is a Matter over Wi-Fi capable, NDIR-based CO₂ air quality monitor that measures and displays carbon dioxide levels, temperature and humidity in real time. The professional precision NDIR sensor updates every 5 seconds, so it quickly reacts to changes in the indoor air.

The device warns of high CO₂ levels with a sound and light alarm, as well as an application notification, and provides personalized recommendations for improving air quality based on current outdoor data. The history going back to 1 year and the possibility of exporting help with long-term analysis and the development of energy-conscious ventilation habits.

Thanks to Matter support, AirGuard CO₂ can be easily integrated into the Apple Home, Google Home, Amazon Alexa and SmartThings ecosystems. Thus, the measured values ​​can also be used in automations – for example, starting ventilation/fans in case of high CO₂, or HVAC control adapted to comfort zones.

Main product features

- NDIR accuracy: professional CO₂ measurement with ±(50 ppm + 5%) accuracy, 5 second update.
- Three measurements in one: CO₂ + temperature + humidity with local display and app display.
- Alerts and tips: sound and light signal, push notification, personalized air quality recommendations.
- 1 year of history: up to 365 days of data storage and export for analyses.
- Matter integration: simple pairing to Apple Home / Google Home / Alexa / SmartThings systems.
- "Do not disturb" mode: periodic muting of notifications and signals.

Smart home protocols and platform compatibility

- Protocol: Matter over Wi-Fi (2.4 GHz, IEEE 802.11 b/g/n).
- Ecosystems: Apple Home, Google Home, Amazon Alexa, Samsung SmartThings (Matter hub required).
- Automation: start scenes based on CO₂/T/RH threshold values ​​(e.g. ventilation, fan, HVAC).
- Notifications: application push, sound/light signal on the device, optional mute.

Smart functions

- Real-time monitoring: 5-second CO₂ update, continuous temperature and humidity monitoring.
- Air quality advice: based on indoor values ​​+ local outdoor AQI.
- History and export: view 365 days of data on a graph, data export support.
- Voice control: Siri / Google Assistant / Alexa via the appropriate platform.

Technical specifications

- Product / model: SONOFF AirGuard CO₂ / SAWF-08P
- Sensor technology: NDIR CO₂ sensor (±50 ppm + 5%); update: 5 s
- Measured parameters: CO₂, temperature, humidity
- MCU: ESP32-D0WDR2-V3
- Power / connector: USB-C (Type-C)
- Wireless: Wi-Fi 2.4 GHz (IEEE 802.11 b/g/n); Compatibility matters
- Material: PC+ABS housing
- Dimensions / weight: 70 × 103 × 26 mm; 101 g
- Operating environment: −10…+50 °C; 5-95% RH (non-condensing)
- Certificates: CE / FCC / RoHS
- FCC ID: 2APN5-SAWF08P
- Box contents: AirGuard CO₂ unit, USB-C cable, documentation