What we like
- Four useful measurements in one inexpensive room display
- Works without buying a smart home hub
- Can join a Thread home for connected readings
What could be better
- USB-C cable and power adapter cost extra
- Only one selected reading is shown at a time
- CO₂ accuracy has a stated limitation above 1,500 metres
More useful than another room thermometer
ALPSTUGA's appeal is the combination of measurements. Temperature and humidity describe one part of a room; CO₂ and PM2.5 particles add information a basic thermometer cannot provide. At the listed $34.99, getting those four readings and a local display is a compelling feature set.
The display also makes it a sensible first purchase before committing to a smart home system. You can keep the chosen measurement visible in the room without a hub or a phone. For someone who wants to glance at CO₂ while working, that is a more direct benefit than another device buried in an app dashboard.
Useful on a desk, less flexible on a shelf
The screen stays on one selected reading rather than showing all four together. That keeps the display simple, but means using its button when you want the broader picture. A monitor with everything visible at once would be better for comparing several numbers at a glance.
USB-C power also determines where it can live. IKEA excludes both the cable and power adapter, which is a disappointing omission at checkout and leaves a visible wire to accommodate. There is no battery-only placement option here. Keep the rear openings clear rather than hiding the unit among books.
The low price is not evidence of measurement accuracy. IKEA allows up to 12 hours for the CO₂ reading to settle and warns of possible inaccuracy above 1,500 metres. Matterhome has not independently tested its accuracy, so that altitude limit should rule it out as an unqualified recommendation for a high-altitude home.
Buy for the readings you will actually use
For a connected history, ALPSTUGA joins Matter over Thread. Home Assistant and SmartThings have support for the four measurement types; Apple and Alexa buyers should not assume every CO₂ or particle reading will appear just because the device pairs.
The local display is the stronger reason to buy when you want useful room information with little extra equipment. If temperature and humidity are all you need, TIMMERFLOTTE is cheaper and battery powered. Spend more on ALPSTUGA when CO₂ and particles are the point of the purchase.
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