These guys have prices: https://9to5google.com/2025/11/06/ikeas-new-lights-sensors-and-remotes-work-with-google-home-through-matter-and-theyre-super-cheap/ http

These guys have prices: https://9to5google.com/2025/11/06/ikeas-new-lights-sensors-and-remotes-work-with-google-home-through-matter-and-theyre-super-cheap/ https://9to5google.com/2025/11/06/ikeas-new-lights-sensors-a... Was looking for this one: ALPSTUGA air quality sensor: £25 (~$33 USD)