Meross MTS300 controls and sensors (lemmy.today)

submitted 2 months ago* (last edited 1 month ago) by paequ2@lemmy.today to c/homeassistant@lemmy.world

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I got the Meross Smart Matter+Wi-Fi Thermostat MTS300 US running today.

In case anyone is curious about what gets exposed to Home Assistant, here it is!

The installation was some what haphazard. I think I was supposed to install with the Meross app. But I'm not sure if that actually was needed. I think I installed via scanning the Matter code in Home Assistant... and then later it appeared in the Meross app. 🤷

The Meross app exposes fan controls. Also child lock. You can also create a schedule in the Meross app. None of these features are visible in HA. (Also cannot control display brightness via HA. Sad.)

Side question: how do y'all create a schedule for your thermostats? I feel like I shouldn't use Meross' scheduling features and I should keep all the smarts in HA, right? I guess I should create Automations and trigger them based on time of day?

Update 12 Nov 2025

Meross released new firmware! I updated my (now 2) thermostats to firmware 9.1.14.1.2.2 and I have fan control now!!! 🥳

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this post was submitted on 28 Oct 2025

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