SONOFF SAWF-07P Smart Indoor Air Quality Monitor with PM2.5, PM10, Temperature & Humidity Sensor, Real-Time Display…
SONOFF
Best for
Best for Matter smart-home integration
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Based on 1 trusted source
Current price
$39.90
Updated May 18, 2026 · 1 min read
Sources behind this verdict
10 reviewers weighted by source trust
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the reviewers we read, the SONOFF AirGuard SAWF-07P is the standout pick for buyers building a Matter-over-WiFi smart home. Matteralpha.com's review highlights the always-on internal fan that actively pulls air across the sensor — a design choice specialist communities consistently say improves PM response time over passive units — and smarthomescene.com's teardown review covers the hardware in detail. On r/homeassistant, a high-trust thread on the AirGuard line praises the CO2 variant's SCD41 NDIR sensor as genuinely accurate hardware (buyers should note the 07P reviewed here is the PM2.5/PM10 model; the CO2 sibling is the 08P).
What reviewers liked
- Native Matter-over-WiFi support — works directly with Apple Home, Google Home, and SmartThings
- Specialist reviewers praise the active-fan sensor design for fast, accurate PM response
- r/homeassistant confirms genuine high-quality sensor modules across the AirGuard line
- Strong value at under $40 for PM2.5/PM10 with a usable on-device screen
Where it falls short
- Thin Amazon review sample (121) and limited long-term reliability data
- No CO2 on the 07P variant — buyers who want CO2 need the separate 08P
- No radon, no VOC, no formaldehyde — narrower than multi-sensor competitors
- Amazon 4.0 average is the lowest among picks here
Across the reviewers we read, the SONOFF AirGuard SAWF-07P is the standout pick for buyers building a Matter-over-WiFi smart home. Matteralpha.com's review highlights the always-on internal fan that actively pulls air across the sensor — a design choice specialist communities consistently say improves PM response time over passive units — and smarthomescene.com's teardown review covers the hardware in detail. On r/homeassistant, a high-trust thread on the AirGuard line praises the CO2 variant's SCD41 NDIR sensor as genuinely accurate hardware (buyers should note the 07P reviewed here is the PM2.5/PM10 model; the CO2 sibling is the 08P).
The honest caveats: the Amazon rating is 4.0 across only 121 reviews, which is a thin sample, and the unit is newer than most competitors so long-term reliability data is limited. There's no radon and no VOC — this is a focused PM and environmental sensor, not a do-everything monitor.
For a Matter or Home Assistant household that wants native, cloud-optional PM2.5 and PM10 reporting feeding into automations, the reviewers we read consistently put SONOFF's AirGuard line ahead of older WiFi-only competitors at the same price.
- Matter Compatibility
- As an Air Quality Meter that supports the Matter ecosystem, it can seamlessly integrate with various smart home platforms (including Apple Home, Amazon Alexa, Google Home, SmartThings, and Home Assistant).
- High Accuracy & Fast Response
- With this smart sensor, the PM2.5 accuracy is maintained at ±10μg/m³ (0-100μg/m³) and ±10% (100-500μg/m³), while temperature and humidity accuracies are ±1°F and ±3%RH, respectively. The continuous power supply ensures data updates every 2 seconds.
- All-in-One Air Quality Display
- Monitor key environmental metrics at a glance—PM2.5, PM10, temperature, and humidity, all displayed together on one 3.73-inch screen.
- Triple Notification System for Air Quality Warnings
- Get notified in three ways: via a sound prompt, a multi-color LED indicator, and app notifications. Customize all notifications through the eWeLink app to activate when PM2.5, PM10, temperature, or humidity exceeds your defined thresholds. Perfect for bedrooms, offices, and nurseries.
- Year-Long Data Tracking & Export
- Gain valuable insights into your indoor air trends with full access to 12 months of historical data. View clear, graphical charts directly in the app and export the data for deeper analysis or sharing, helping you make informed decisions about your home environment.
The SCD41 sensor it uses for Co2 is quite accurate. It cost $15 alone. I have a SCD41 hooked up with ESP32 running nicely at home. Just curious ...
PM and TVOC readings seemed okay, but the CO₂ issues make the device basically useless. I'd like to avoid this hassle again and get something ...
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“SONOFF AirGuard PM2.5/PM10 Air Quality Monitor (SAWF” · 07P ...
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