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I give the IKEA ALPSTUGA 3.5/5. I like that it’s USB-C powered and not too expensive compared with alternatives, but mine go offline a lot.
It happens often enough that I have an automation telling me once a day which units need to be power-cycled to reconnect. The ones with weaker connections seem to drop offline more often, but even with a pretty robust network now, some still drop off.
The ALPSTUGA is a cheap way to get CO2 and PM2.5 readings into Home Assistant, and because it speaks Matter over Thread it stays fully local with no IKEA hub. You will need a Thread border router, but if you already have one this is an easy, low-cost addition for ventilation automations.
Standout: Affordable Matter over Thread air quality monitor covering CO2, PM2.5, temperature and humidity.
Notes last checked May 25, 2026.
Matter over Thread device. Readings stay local through Home Assistant and a Thread border router, with no IKEA cloud account required for operation.
Home Assistant support: supported · integration path: matter.
Price notes: One of the lowest-cost CO2 and particulate monitors available. Sold through IKEA only.
Compare side by side: see sensor comparisons →
IKEA VINDSTYRKA is end of life; ALPSTUGA replaces it
IKEA has retired the Zigbee VINDSTYRKA air quality sensor. The Matter-over-Thread ALPSTUGA is the replacement; it needs a Thread border router where the VINDSTYRKA needed a Zigbee coordinator.
From the change log and the news briefs that name this product.
The compatibility notes above have not been through the source audit yet. The manufacturer's page is here; the notes were last checked May 25, 2026.
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