SONOFF AirGuard CO₂ — Matter Over Wi-Fi Air Quality Monitor (SAWF-08P)
Know what you're breathing. The SONOFF AirGuard CO₂ (SAWF-08P) is a Matter over Wi-Fi air quality monitor with a professional-grade NDIR CO₂ sensor (Sensirion SCD41). Tracks carbon dioxide (400–5,000 ppm), temperature, and humidity simultaneously on a clear 3.73" LCD display. Refreshes every 5 seconds. Triple alert system — sound alarm, colour LED indicator, and push notifications. Stores 1 year of data with export. Works natively with Apple Home, Google Home, Amazon Alexa, SmartThings, and Home Assistant via Matter. USB-C powered. MPN: SAWF-08P.
⚡ Key Features
- Professional NDIR CO₂ Sensor (Sensirion SCD41) — ±(50 ppm + 5%) accuracy; long-term stability; far more reliable than cheap chemical sensors
- 5-Second Refresh Rate — readings update every 5 seconds on the 3.73" LCD display
- 3-in-1 Monitoring — simultaneous CO₂ (ppm), temperature (°C/°F), and humidity (% RH)
- Triple Alert System — audible buzzer, multi-colour LED indicator (green/yellow/red), and push notifications
- 1 Year Historical Data — eWeLink app stores 12 months; export for analysis; air quality improvement suggestions
- Matter Over Wi-Fi — Apple Home, Google Home, Alexa, SmartThings, Home Assistant; no eWeLink app required
- Smart Automations — trigger fans, ventilation, air purifiers based on CO₂ readings
- USB-C Powered — continuous power via included USB-A to USB-C cable
🏠 Perfect For
Home Office & Bedrooms
CO₂ builds up fast in closed rooms. Above 1,000 ppm you feel drowsy. AirGuard alerts you when it's time to ventilate.
Schools & Meeting Rooms
Packed rooms push CO₂ above 1,500 ppm in 30 minutes. The red LED tells everyone it's time to open up.
Gyms & Studios
Heavy breathing drives CO₂ sky-high. Automate extraction fans via a SONOFF smart switch when the threshold is breached.
Health & Wellness
Track CO₂ trends over months and correlate with allergy and respiratory symptoms. Export data for your doctor.
📋 Technical Specifications
| Product | SONOFF AirGuard CO₂ Air Quality Monitor |
| MPN / Model | SAWF-08P |
| CO₂ Sensor | Sensirion SCD41 (NDIR) |
| CO₂ Range | 400–5,000 ppm |
| CO₂ Accuracy | ±(50 ppm + 5%) |
| CO₂ Refresh | Every 5 seconds |
| Temp Accuracy | ±0.5°C |
| Humidity Accuracy | ±3% RH |
| Display | 3.73" LCD |
| Protocol | Matter over Wi-Fi |
| Power | USB-C (5V, continuous) |
| Platforms | Apple Home · Google Home · Alexa · SmartThings · Home Assistant |
| Warranty | 1 Year Manufacturer Warranty |
❓ Frequently Asked Questions
Does it need a hub?
Does it run on batteries?
Does it work with Home Assistant?
🤝 Need Help?
Call Us
Jesse: 071 678 8719
Jason: 084 505 7481
Visit Us
8 Wildebraam Street
Weltevreden Park, Roodepoort
Gauteng, 1709
info@eiferer.co.za
Breathe Better. Live Smarter.
NDIR CO₂ monitor · Matter over Wi-Fi · 5-second updates · Apple Home · Google Home · Alexa
