Sonoff AirGuard CO2 Matter Air Quality Monitor
An easy-to-read smart CO₂ monitor that helps you stay alert and comfortable indoors, with clear alerts when levels rise.
This smart air quality monitor tracks carbon dioxide (CO₂) levels in your home, alongside temperature and humidity, and notifies you when levels increase. CO₂ builds up naturally in occupied spaces and elevated levels can lead to drowsiness, headaches and poor concentration. Monitoring it makes it easy to know when to ventilate, helping keep bedrooms, offices and workspaces feeling fresh and comfortable.
Alerts can be delivered visually, audibly, or via your favourite Matter-compatible smart home platform, making it simple to take action when indoor air quality changes.
The device features a clear LCD screen to view the CO₂ levels and is powered via USB-C, with a short cable included.
Get Smart, Automate!
This is a smart sensor, so the fun really begins when you connect it to your home automation system.
You can create rules based on CO₂, temperature or humidity levels, triggering notifications or actions such as opening a window, turning on ventilation, or activating an extractor fan. At a glance, you can check CO₂ levels throughout your home and, depending on your platform, view historical sensor data to understand long-term air quality patterns.
Sonoff’s Matter over Wi-Fi devices can be used with their eWeLink app with no additional hardware required. They can also be added to other ecosystems such as Apple Home, Google Home and Alexa, and work with a Raspberry Pi running Home Assistant or a Home Assistant Green equipped with a Thread or Matter adapter.
Features
- Multi-metric environmental monitoring: Displays carbon dioxide (CO₂), temperature and humidity, with selectable temperature units.
- High-accuracy CO₂ sensing: Uses a professional-grade NDIR sensor with ±(50 ppm + 5%) accuracy, refreshing every five seconds.
- On-device and smart alerts: Receive sound alerts, indicator light warnings, or notifications via your connected smart home platform.
- Matter certified: Works with a wide range of Matter-compatible smart home ecosystems, including Home Assistant.
- Automation ready: Use CO₂, temperature or humidity readings to trigger automations such as running an extractor fan.
Tech Specs
| Model | SAWF-08P |
| MCU | ESP32-D0WDR2-V3 |
| Input | 5V 1A |
| Interface type | USB-C |
| Wireless connection | Wi-Fi IEEE 802.11 b/g/n 2.4GHz |
| Net weight | 101g |
| Colour | White |
| Dimensions | 70x103x26mm |
| Casing material | PC+ABS |
| Applicable place | Indoor |
| Working temperature | -10C~50C |
| Temperature error range | ±0.5 °C; ±1F |
| Working humidity | 5~95% RH non-condensing |
| Humidity error range | ±3% |
| Certification | CE/FCC/RoHS |
| FCC ID | 2APN5-SAWF08P |
Resources
Check out the SAWF-08P knowledge centre for technical details, compatibility, troubleshooting and setup tips.
Notes
- Note that this device has intake/exhaust vents on the sides and back so you should only use it with the built in stand, it's not suitable for wall mounting.
What is Matter?
Matter is a modern smart home standard that makes it easier for devices from different brands to work together reliably. Matter-certified devices like this one can be used across multiple platforms, including Home Assistant, Apple Home, Google Home and Alexa.
Matter devices are designed to work locally on your home network, so they do not rely on the internet or a cloud service to function. This means faster response times, improved reliability and better privacy.
Instead of using its own special radio tech like Zigbee or Z-Wave, Matter runs over standard home networking technologies like Wi-Fi, Ethernet, or Thread. This helps ensure long-term compatibility and makes it easier to mix and match smart home products from different manufacturers.
Want to learn more? Check out the official Matter website.
Original: $37.75
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Sonoff AirGuard CO2 Matter Air Quality Monitor
An easy-to-read smart CO₂ monitor that helps you stay alert and comfortable indoors, with clear alerts when levels rise.
This smart air quality monitor tracks carbon dioxide (CO₂) levels in your home, alongside temperature and humidity, and notifies you when levels increase. CO₂ builds up naturally in occupied spaces and elevated levels can lead to drowsiness, headaches and poor concentration. Monitoring it makes it easy to know when to ventilate, helping keep bedrooms, offices and workspaces feeling fresh and comfortable.
Alerts can be delivered visually, audibly, or via your favourite Matter-compatible smart home platform, making it simple to take action when indoor air quality changes.
The device features a clear LCD screen to view the CO₂ levels and is powered via USB-C, with a short cable included.
Get Smart, Automate!
This is a smart sensor, so the fun really begins when you connect it to your home automation system.
You can create rules based on CO₂, temperature or humidity levels, triggering notifications or actions such as opening a window, turning on ventilation, or activating an extractor fan. At a glance, you can check CO₂ levels throughout your home and, depending on your platform, view historical sensor data to understand long-term air quality patterns.
Sonoff’s Matter over Wi-Fi devices can be used with their eWeLink app with no additional hardware required. They can also be added to other ecosystems such as Apple Home, Google Home and Alexa, and work with a Raspberry Pi running Home Assistant or a Home Assistant Green equipped with a Thread or Matter adapter.
Features
- Multi-metric environmental monitoring: Displays carbon dioxide (CO₂), temperature and humidity, with selectable temperature units.
- High-accuracy CO₂ sensing: Uses a professional-grade NDIR sensor with ±(50 ppm + 5%) accuracy, refreshing every five seconds.
- On-device and smart alerts: Receive sound alerts, indicator light warnings, or notifications via your connected smart home platform.
- Matter certified: Works with a wide range of Matter-compatible smart home ecosystems, including Home Assistant.
- Automation ready: Use CO₂, temperature or humidity readings to trigger automations such as running an extractor fan.
Tech Specs
| Model | SAWF-08P |
| MCU | ESP32-D0WDR2-V3 |
| Input | 5V 1A |
| Interface type | USB-C |
| Wireless connection | Wi-Fi IEEE 802.11 b/g/n 2.4GHz |
| Net weight | 101g |
| Colour | White |
| Dimensions | 70x103x26mm |
| Casing material | PC+ABS |
| Applicable place | Indoor |
| Working temperature | -10C~50C |
| Temperature error range | ±0.5 °C; ±1F |
| Working humidity | 5~95% RH non-condensing |
| Humidity error range | ±3% |
| Certification | CE/FCC/RoHS |
| FCC ID | 2APN5-SAWF08P |
Resources
Check out the SAWF-08P knowledge centre for technical details, compatibility, troubleshooting and setup tips.
Notes
- Note that this device has intake/exhaust vents on the sides and back so you should only use it with the built in stand, it's not suitable for wall mounting.
What is Matter?
Matter is a modern smart home standard that makes it easier for devices from different brands to work together reliably. Matter-certified devices like this one can be used across multiple platforms, including Home Assistant, Apple Home, Google Home and Alexa.
Matter devices are designed to work locally on your home network, so they do not rely on the internet or a cloud service to function. This means faster response times, improved reliability and better privacy.
Instead of using its own special radio tech like Zigbee or Z-Wave, Matter runs over standard home networking technologies like Wi-Fi, Ethernet, or Thread. This helps ensure long-term compatibility and makes it easier to mix and match smart home products from different manufacturers.
Want to learn more? Check out the official Matter website.
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Description
An easy-to-read smart CO₂ monitor that helps you stay alert and comfortable indoors, with clear alerts when levels rise.
This smart air quality monitor tracks carbon dioxide (CO₂) levels in your home, alongside temperature and humidity, and notifies you when levels increase. CO₂ builds up naturally in occupied spaces and elevated levels can lead to drowsiness, headaches and poor concentration. Monitoring it makes it easy to know when to ventilate, helping keep bedrooms, offices and workspaces feeling fresh and comfortable.
Alerts can be delivered visually, audibly, or via your favourite Matter-compatible smart home platform, making it simple to take action when indoor air quality changes.
The device features a clear LCD screen to view the CO₂ levels and is powered via USB-C, with a short cable included.
Get Smart, Automate!
This is a smart sensor, so the fun really begins when you connect it to your home automation system.
You can create rules based on CO₂, temperature or humidity levels, triggering notifications or actions such as opening a window, turning on ventilation, or activating an extractor fan. At a glance, you can check CO₂ levels throughout your home and, depending on your platform, view historical sensor data to understand long-term air quality patterns.
Sonoff’s Matter over Wi-Fi devices can be used with their eWeLink app with no additional hardware required. They can also be added to other ecosystems such as Apple Home, Google Home and Alexa, and work with a Raspberry Pi running Home Assistant or a Home Assistant Green equipped with a Thread or Matter adapter.
Features
- Multi-metric environmental monitoring: Displays carbon dioxide (CO₂), temperature and humidity, with selectable temperature units.
- High-accuracy CO₂ sensing: Uses a professional-grade NDIR sensor with ±(50 ppm + 5%) accuracy, refreshing every five seconds.
- On-device and smart alerts: Receive sound alerts, indicator light warnings, or notifications via your connected smart home platform.
- Matter certified: Works with a wide range of Matter-compatible smart home ecosystems, including Home Assistant.
- Automation ready: Use CO₂, temperature or humidity readings to trigger automations such as running an extractor fan.
Tech Specs
| Model | SAWF-08P |
| MCU | ESP32-D0WDR2-V3 |
| Input | 5V 1A |
| Interface type | USB-C |
| Wireless connection | Wi-Fi IEEE 802.11 b/g/n 2.4GHz |
| Net weight | 101g |
| Colour | White |
| Dimensions | 70x103x26mm |
| Casing material | PC+ABS |
| Applicable place | Indoor |
| Working temperature | -10C~50C |
| Temperature error range | ±0.5 °C; ±1F |
| Working humidity | 5~95% RH non-condensing |
| Humidity error range | ±3% |
| Certification | CE/FCC/RoHS |
| FCC ID | 2APN5-SAWF08P |
Resources
Check out the SAWF-08P knowledge centre for technical details, compatibility, troubleshooting and setup tips.
Notes
- Note that this device has intake/exhaust vents on the sides and back so you should only use it with the built in stand, it's not suitable for wall mounting.
What is Matter?
Matter is a modern smart home standard that makes it easier for devices from different brands to work together reliably. Matter-certified devices like this one can be used across multiple platforms, including Home Assistant, Apple Home, Google Home and Alexa.
Matter devices are designed to work locally on your home network, so they do not rely on the internet or a cloud service to function. This means faster response times, improved reliability and better privacy.
Instead of using its own special radio tech like Zigbee or Z-Wave, Matter runs over standard home networking technologies like Wi-Fi, Ethernet, or Thread. This helps ensure long-term compatibility and makes it easier to mix and match smart home products from different manufacturers.
Want to learn more? Check out the official Matter website.
