IKEA
IKEA ALPSTUGA Air Quality Sensor
- Native integration
- Local control
- Thread
- Matter
Prices verified September 2026
See more sensors picks on our Amazon storefront →Our verdict
A genuine CO2 plus PM2.5 monitor for £25 is unheard of — under half the SwitchBot Meter Pro CO2's £60 and a sixth of the Aranet4's £169, and IKEA's collaboration with Sensirion (the same sensor maker behind SwitchBot's chip) suggests this isn't a budget knock-off sensor, just a budget price. It speaks Matter over Thread, so it drops straight into HA's Matter integration with no IKEA hub needed if you already have a Thread border router. At a compact 40 x 40 x 90mm it suits a shelf or windowsill; keep it clear of doors, vents and direct sun. Sells out fast at IKEA UK.
What can Home Assistant control on the IKEA ALPSTUGA Air Quality Sensor?
| Control | Type | What it does |
|---|---|---|
| CO2 | Sensor (ppm) | Sensirion CO2 reading, exposed as its own entity via Matter's Air Quality cluster — not folded into a single AQI score. |
| PM2.5 | Sensor (µg/m³) | Fine particulate concentration, exposed as an independent entity from the same Sensirion module. |
| Temperature | Sensor | Ambient temperature reading via the standard Matter Temperature Measurement cluster. |
| Humidity | Sensor (%) | Relative humidity reading via the standard Matter Humidity cluster. |
| Air quality | Sensor | Device-calculated summary index derived from CO2 and PM2.5, useful for a single-glance state but not a substitute for the individual sensors in automations. |
Matter's Air Quality cluster exposes ALPSTUGA's readings as separate sensor entities, not one lumped index — CO2, PM2.5, temperature and humidity all land as individual sensors alongside a general air-quality summary state, so automations can gate on CO2 alone rather than a blended score. Thread commissioning is the rough edge: several users needed to sync credentials via the phone's Thread Companion App rather than the Thread integration's own send-credentials button, and needed IPv6 forwarding enabled on the router before pairing succeeded. HA has no native Matter time-sync, so the onboard clock can drift or reset on power loss since the device has no backup battery. A solid automation: trigger a connected extractor fan or purifier when the CO2 sensor crosses roughly 1000ppm, with a stabilisation delay so it doesn't flap on transient spikes from someone walking past.
Specs
| power | USB-C mains |
|---|---|
| display | LED display with clock mode |
| requires | Thread border router (DIRIGERA, HA Connect ZBT-1/ZBT-2, Apple TV etc.) |
| materials | ABS plastic |
| dimensions | 40 x 40 x 90mm, approx. 90g |
| sensor type | Air quality (CO2, PM2.5, temperature, humidity) — Sensirion sensor |
| co2 pm25 accuracy | Not published by IKEA (unlike SwitchBot/Aranet4, who both quote NDIR accuracy specs) |
How does the IKEA ALPSTUGA Air Quality Sensor compare?
| Product | From | Protocol | Local control | Integration |
|---|---|---|---|---|
| IKEA ALPSTUGA Air Quality Sensor (this product) | £25 | Matter, Thread | Yes | Native |
| Aqara Door and Window Sensor P2 | £23.99 | Matter, Thread | Yes | Works with HA |
| Aqara Motion Sensor P1 | £18.99 | Zigbee | Yes | Zigbee2MQTT / ZHA |
| Aqara Multi-State Sensor P100 | £25.49 | Zigbee, Thread, Matter | Yes | Zigbee2MQTT / ZHA |
Frequently asked questions
- Does the IKEA ALPSTUGA Air Quality Sensor work with Home Assistant locally?
- Yes. The IKEA ALPSTUGA Air Quality Sensor is controlled locally in Home Assistant through a built-in Home Assistant core integration (matter), so it keeps working if your internet connection or the IKEA cloud goes down. Control and state updates stay on your own network.
- Which protocol does the IKEA ALPSTUGA Air Quality Sensor use, and do I need a hub?
- The IKEA ALPSTUGA Air Quality Sensor uses Matter and Thread. To pair it with Home Assistant you need a Thread border router if it is Matter-over-Thread, or just your Wi-Fi network if it is Matter-over-Wi-Fi; or a Thread border router (Home Assistant Connect ZBT-1, Apple TV 4K or a HomePod mini all work). IKEA's own hub is not required when you integrate through a built-in Home Assistant core integration (matter).
- How much does the IKEA ALPSTUGA Air Quality Sensor cost in the UK?
- The lowest price we have listed for the IKEA ALPSTUGA Air Quality Sensor is £25 at IKEA UK. Prices were last checked in September 2026 and change often, so confirm on the retailer's page before buying.