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Air Quality Monitors · Head to head

Airthings Wave Plus vs SONOFF SAWF-08P Air Quality Monitor

Full Smart Air Quality Monitors comparison in 2026

Updated September 2026
Data from Amazon and official Airthings and Sonoff sites.
2026 verdict
Rather see it on a screen? The SONOFF SAWF-08P Air Quality Monitor is the one that actually shows a number.
SONOFF SAWF-08P Air Quality Monitor
Winner
SONOFF SAWF-08P Air Quality Monitor
$49.90
Buy on Amazon USACheck price
It puts CO2, temperature and humidity on a permanent LCD, costs less, and commissions natively over Matter into Apple Home, Alexa, Google Home, SmartThings and Home Assistant with no hub. The Airthings Wave Plus counters with six sensors instead of three, radon, TVOC and atmospheric pressure on top of the basics, plus a SmartLink hub option for continuous data, but it has no screen at all, just a wave-activated status light, and stays on Bluetooth unless you add that hub. Both carry a similar owner rating for what they do. Pick the Wave Plus for the broadest sensor spread, radon included; pick the SONOFF for a readable, Matter-native monitor at a lower cost.
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FeatureAirthings Wave PlusSONOFF SAWF-08P Air Quality MonitorWinner
Price$249.99$49.90SONOFF SAWF-08P Air Quality Monitor
Rating4.24.3SONOFF SAWF-08P Air Quality Monitor
ConnectivityBluetooth, Other2.4 GHz WiFiAirthings Wave Plus
ScreenNOYESSONOFF SAWF-08P Air Quality Monitor
IntegrationsGoogle Home, Alexa, Home AssistantGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterSONOFF SAWF-08P Air Quality Monitor
SensorsTVOC, CO2, Radon, Temperature, Humidity, Atmospheric PressureCO2, Temperature, HumidityAirthings Wave Plus
AlertsTemperature Alerts, Humidity Alerts, Air Quality Alerts, Low Battery AlertsTemperature Alerts, Humidity Alerts, Air Quality AlertsAirthings Wave Plus
Weather ResistanceNONOTie

What the differences mean

Sensor count

The Wave Plus measures six things: radon, CO2, TVOC, temperature, humidity and atmospheric pressure. The SAWF-08P measures three: CO2, temperature and humidity.

Display

The SAWF-08P shows its readings on a permanent LCD panel. The Wave Plus has no screen, just a wave-to-check status light, so exact numbers live only in the app.

Connectivity

The Wave Plus is Bluetooth-only unless you add an Airthings hub for continuous, remote data. The SAWF-08P connects over 2.4 GHz Wi-Fi and stays online on its own.

Smart home reach

The SAWF-08P's native Matter reaches Apple Home, Alexa, Google Home, SmartThings and Home Assistant with no hub. The Wave Plus works with Google Home, Alexa and Home Assistant, with no Apple Home, SmartThings or Matter support.

Power

The Wave Plus runs on 2 AA batteries and can be placed anywhere. The SAWF-08P needs a permanent USB-C connection and has no battery option.

Which one to buy if

  • you want the broadest sensor spread, radon included
    Airthings Wave Plus

    Six sensors against the SAWF-08P's three, including radon and TVOC.

  • you'd rather read a number off a screen than open an app
    SONOFF SAWF-08P Air Quality Monitor

    Its permanent LCD shows CO2, temperature and humidity directly; the Wave Plus has no screen at all.

  • you don't want to buy a separate hub for continuous data
    SONOFF SAWF-08P Air Quality Monitor

    It's online on its own over Wi-Fi; the Wave Plus needs an Airthings hub for the same thing.

  • your platform is Apple Home or SmartThings
    SONOFF SAWF-08P Air Quality Monitor

    Native Matter reaches both directly; the Wave Plus has no path into either.

Airthings

Airthings Wave Plus

$249.99
Buy on Amazon USACheck price
  • + Connectivity: Bluetooth, Other
  • + Sensors: TVOC, CO2, Radon, Temperature, Humidity, Atmospheric Pressure
  • + Alerts: Temperature Alerts, Humidity Alerts, Air Quality Alerts, Low Battery Alerts
  • - Price: $249.99 vs $49.90
  • - Rating: 4.2 vs 4.3

What owners say

Owners of both monitors describe the initial pairing as quick, with a first reading inside a few minutes either way. Where they differ is what each one is actually for. Airthings Wave Plus owners value having radon alongside CO2 and TVOC in one battery-powered unit and credit it with prompting real ventilation changes, though several wish for a screen instead of the wave-to-check light and note the app can be slow to sync over Bluetooth. SONOFF SAWF-08P Air Quality Monitor owners like the always-visible display and how easily it joins a Matter network with no hub, while some mention the sensor needs periodic fresh air exposure to stay calibrated.

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.

  • Airthings Wave Plus
  • SONOFF SAWF-08P Air Quality Monitor

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Frequently Asked Questions

Which is better overall: Airthings Wave Plus or SONOFF SAWF-08P Air Quality Monitor?

For most buyers, the SONOFF SAWF-08P Air Quality Monitor is the easier pick: it costs less, has a built-in display, and its native Matter support reaches five platforms. The Airthings Wave Plus senses far more, including radon, TVOC and atmospheric pressure.

What is the biggest difference between the Airthings Wave Plus and the SONOFF SAWF-08P Air Quality Monitor?

Sensor count versus display. The Wave Plus measures six things but has no screen and relies on Bluetooth. The SAWF-08P measures three things but shows them all on a permanent LCD with native Matter reach.

Does the Airthings Wave Plus measure radon?

Yes, radon is one of its six sensors, alongside CO2, TVOC, temperature, humidity and atmospheric pressure. The SONOFF SAWF-08P Air Quality Monitor has no radon sensor at all.

Which one works with more smart home platforms?

The SONOFF SAWF-08P Air Quality Monitor, whose native Matter reaches Apple Home, Alexa, Google Home, SmartThings and Home Assistant. The Airthings Wave Plus works with Google Home, Alexa and Home Assistant only.

Who should buy the Airthings Wave Plus?

Anyone who wants one battery-powered device covering radon alongside CO2, TVOC, temperature, humidity and pressure, and doesn't mind a screenless design that syncs over Bluetooth.

Who should buy the SONOFF SAWF-08P Air Quality Monitor?

Buyers who want an affordable, always-visible CO2 reading that plugs directly into whatever Matter smart home they already run.

Full comparison table

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