Updated October 2026
Data from the official Apollo Automation and Sonoff sites.
2026 verdict
Across the 2026 comparison, SONOFF SAWF-08P Air Quality Monitor earns the nod over Apollo MSR-2 with CO2 on the strength of price, screen, and integrations.
It builds its lead on price, screen, and integrations, then backs it up with a stronger showing on alerts. Apollo MSR-2 with CO2 can still be the right pick, but only if sensors outweigh the wider strengths of SONOFF SAWF-08P Air Quality Monitor. That is enough to make SONOFF SAWF-08P Air Quality Monitor the better pick for most buyers.
Works with
Connectivity
- Wi-Fi 2.4 GHz
vs
Winner
Connectivity
- Wi-Fi 2.4 GHz
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| Feature | Apollo MSR-2 with CO2 | SONOFF SAWF-08P Air Quality Monitor | Winner |
|---|---|---|---|
| Price | $56.09 | $49.90 | SONOFF SAWF-08P Air Quality Monitor |
| Screen | NO | YES | SONOFF SAWF-08P Air Quality Monitor |
| Integrations | Home Assistant | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | SONOFF SAWF-08P Air Quality Monitor |
| Sensors | CO2, Temperature, Atmospheric Pressure, Ambient Light, UV, Occupancy | CO2, Temperature, Humidity | Apollo MSR-2 with CO2 |
| Alerts | Temperature Alerts, Air Quality Alerts | Temperature Alerts, Humidity Alerts, Air Quality Alerts | SONOFF SAWF-08P Air Quality Monitor |
| Weather Resistance | NO | NO | Tie |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi | Tie |
| Local Control | YES | YES | Tie |
$56.09
- + Sensors: CO2, Temperature, Atmospheric Pressure, Ambient Light, UV, Occupancy
- - Price: $56.09 vs $49.90
- - Screen: NO vs YES
Winner
$49.90
- + Price: $49.90
- + Screen: YES
- + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- - Sensors: CO2, Temperature, Humidity vs CO2, Temperature, Atmospheric Pressure, Ambient Light, UV, Occupancy
Frequently Asked Questions
Which is better overall: Apollo MSR-2 with CO2 or SONOFF SAWF-08P Air Quality Monitor?
SONOFF SAWF-08P Air Quality Monitor has the stronger overall profile in this comparison, especially for price, screen, and integrations.
What is the biggest difference between Apollo MSR-2 with CO2 and SONOFF SAWF-08P Air Quality Monitor?
Price is one of the clearest differences: Apollo MSR-2 with CO2 lists $56.09, while SONOFF SAWF-08P Air Quality Monitor lists $49.90.
Which one looks better on price?
Apollo MSR-2 with CO2 is listed at $56.09, while SONOFF SAWF-08P Air Quality Monitor is listed at $49.90. SONOFF SAWF-08P Air Quality Monitor (better spec).
Who should buy Apollo MSR-2 with CO2?
Choose Apollo MSR-2 with CO2 if your priority is sensors and that matters more than price.
Who should buy SONOFF SAWF-08P Air Quality Monitor?
Choose SONOFF SAWF-08P Air Quality Monitor if your priority is price and screen and that matters more than sensors.
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