Winner
Updated October 2026
Data from Amazon and official Sonoff site.
2026 verdict
Air quality monitoring splits into particles and gases, and the SONOFF SAWF-07P Air Quality Monitor wins this matchup on price and the wider sensor set.
It reports PM2.5 and PM10 alongside temperature and humidity, four readings on one screen, where the SONOFF SAWF-08P Air Quality Monitor measures CO2, temperature and humidity; both are Matter over Wi-Fi and reach Apple Home, Google Home, Alexa, SmartThings and Home Assistant with no hub. The SONOFF SAWF-08P Air Quality Monitor is the better reviewed of the two and is the right pick if carbon dioxide is the number you actually want to watch. Neither display is backlit, the 07P has no CO2 sensor and the 08P has no particle sensor, so the choice comes down to which reading matters to you.
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| Feature | SONOFF SAWF-07P Air Quality Monitor | SONOFF SAWF-08P Air Quality Monitor | Winner |
|---|---|---|---|
| Price | $39.90 | $49.90 | SONOFF SAWF-07P Air Quality Monitor |
| Rating | 3.8 | 4.3 | SONOFF SAWF-08P Air Quality Monitor |
| Sensors | PM2.5, PM10, Temperature, Humidity | CO2, Temperature, Humidity | SONOFF SAWF-07P Air Quality Monitor |
| Weather Resistance | NO | NO | Tie |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi | Tie |
| Screen | YES | YES | Tie |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Tie |
| Alerts | Temperature Alerts, Humidity Alerts, Air Quality Alerts | Temperature Alerts, Humidity Alerts, Air Quality Alerts | Tie |
What the differences mean
What it senses
The SONOFF SAWF-07P Air Quality Monitor senses PM2.5, PM10, temperature and humidity, and the SONOFF SAWF-08P Air Quality Monitor senses CO2, temperature and humidity. This is the decision: one tracks dust and smoke particles, the other tracks stale air, and neither covers both.
Refresh rate
The SONOFF SAWF-07P Air Quality Monitor refreshes its readings every 2 seconds and the SONOFF SAWF-08P Air Quality Monitor every 5 seconds. Both are fast enough to watch a room change, and neither is slow enough to miss a cooking spike.
Display
The SONOFF SAWF-07P Air Quality Monitor has a 3.73 inch LCD that is not backlit, so it is unreadable in the dark. The SONOFF SAWF-08P Air Quality Monitor has a larger display that owners call clear and easy to read, though both are monochrome and neither reacts to touch.
Power and calibration
Both monitors are mains powered over USB-C with no battery, and both keep twelve months of history in the app. The SONOFF SAWF-08P Air Quality Monitor adds a caveat: its CO2 sensor has no manual calibration, so it relies on fresh-air exposure to reset its baseline, which owners report works only sometimes.
Positioning
The SONOFF SAWF-07P Air Quality Monitor is the more affordable of the pair. The SONOFF SAWF-08P Air Quality Monitor charges more for the NDIR CO2 sensor, which is the main reason it costs more than its particle-sensing sibling.
Which one to buy if
- you want particle readings for a Matter smart home
The SONOFF SAWF-07P Air Quality Monitor reports PM2.5 and PM10 and is the cheaper way to trigger dust automations.
- carbon dioxide is the number you want to track
The SONOFF SAWF-08P Air Quality Monitor carries an NDIR CO2 sensor rated from 400 to 5000 ppm.
- you want the lower price of the two
The SONOFF SAWF-07P Air Quality Monitor is the more affordable monitor of the pair.
- you want the reading to refresh as fast as possible
The SONOFF SAWF-07P Air Quality Monitor updates every 2 seconds against 5 for the other.
Winner
$39.90
- + Price: $39.90
- + Sensors: PM2.5, PM10, Temperature, Humidity
- - Rating: 3.8 vs 4.3
$49.90
- + Rating: 4.3
- - Price: $49.90 vs $39.90
- - Sensors: CO2, Temperature, Humidity vs PM2.5, PM10, Temperature, Humidity
What owners say
Owners of both SONOFF monitors are buying the same thing: a Matter-native sensor that feeds local automations rather than a vendor cloud. SONOFF SAWF-07P Air Quality Monitor owners, many of them in Home Assistant, describe pairing in minutes with every entity exposed locally and particulate readings sensitive enough to spike when bacon is fried or a neighbour lights a wood burner, while they warn that the LCD has no backlight, the status LED is bright at night and there is no CO2 sensing. SONOFF SAWF-08P Air Quality Monitor owners praise the NDIR CO2 reading, a large clear display that updates every five seconds and a full year of exportable history, and they flag a rear-mounted USB-C port that makes wall mounting awkward and the lack of a manual calibration control.
Price history compared
Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.
- SONOFF SAWF-07P Air Quality Monitor
- SONOFF SAWF-08P Air Quality Monitor
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Frequently Asked Questions
Which is better overall: SONOFF SAWF-07P Air Quality Monitor or SONOFF SAWF-08P Air Quality Monitor?
The SONOFF SAWF-07P Air Quality Monitor for particle sensing at a lower price, with PM2.5, PM10, temperature and humidity. The SONOFF SAWF-08P Air Quality Monitor is the pick if you need carbon dioxide, which the 07P does not measure at all.
What is the biggest difference between the SONOFF SAWF-07P Air Quality Monitor and the SONOFF SAWF-08P Air Quality Monitor?
The sensor they are built around. The SONOFF SAWF-07P Air Quality Monitor measures particulates, temperature and humidity, while the SONOFF SAWF-08P Air Quality Monitor measures CO2 with an NDIR sensor, temperature and humidity.
Do both work with Home Assistant and Matter?
Yes. The SONOFF SAWF-07P Air Quality Monitor and the SONOFF SAWF-08P Air Quality Monitor are both Matter over Wi-Fi, so Apple Home, Google Home, Alexa, SmartThings and Home Assistant all see them without a bridge or a Thread border router.
Do either of these monitors measure both particles and CO2?
No. The SONOFF SAWF-07P Air Quality Monitor has no CO2 sensor and the SONOFF SAWF-08P Air Quality Monitor has no particulate sensor, so neither covers both kinds of reading. Choose by which one you care about.
Do they need batteries?
Neither does. Both the SONOFF SAWF-07P Air Quality Monitor and the SONOFF SAWF-08P Air Quality Monitor are powered continuously over USB-C, which is what allows their fast refresh rates, so there is nothing to recharge.
Who should buy the SONOFF SAWF-08P Air Quality Monitor?
A bedroom, nursery or home office where CO2 is what signals stale air, and where the reading needs to drive a ventilation fan or an open-window reminder through Matter.
Full comparison table
Compare all 32 Air Quality Monitors side by side
You are looking at two of them. The full table lines up all Air Quality Monitors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 32 Air Quality Monitors
- 54 specs compared
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Last priceJun 4, 2026$109.95
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