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Meross MTS300MA Matter Smart Thermostat

Meross / MTS300MA, MTS300

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Does the Meross MTS300MA Matter Smart Thermostat work with HomeKit, Alexa, and Google Home?

The Meross MTS300MA Matter Smart Thermostat is a Matter thermostat for heating and cooling systems, including furnaces, boilers, air conditioners, heat pumps and fan coil units.

It needs a C wire and works with HomeKit, Alexa, Google Assistant and SmartThings. It suits HomeKit, Google Home, Alexa, SmartThings and Home Assistant users, with native support through Matter over Wi-Fi.

At a glance: works withHow this is decided: cited platform facts only
HomeKit
Yes[1]
Matter / Wi-Fi, native
Google Home
Yes[1]
Matter / Wi-Fi, native
Alexa
Yes[1]
Matter / Wi-Fi, native
SmartThings
Yes[1]
Matter / Wi-Fi, native
Home Assistant
Yes[2][3]
Matter / Wi-Fi, native

Key facts

Meross MTS300MA Matter Smart Thermostat facts

How facts are sourced: every cell cites its source below
FactValue
StatusCurrent[1]
List price$99.99[1] as of
TypeWall thermostat[1]
Heating systemHeating and cooling, C wire required[1]
StandardMatter over Wi-Fi[1]
HomeKitVia Matter[1]

Integration paths

How the Meross MTS300MA Matter Smart Thermostat connects

1 pathHow facts are sourced: every cell cites its source below
PathRequiresiLocaliFeatures lostPlatformsi
Matter / Wi-FiA Matter controller, 2.4 GHz Wi-Fi network, C wire[1]unknownunknown
About these columns
Requires
Hardware the path needs beyond the device and a controller.
Local
Yes when control on this path keeps working with the internet down.
Platforms
The platforms that work with the device on this path: Native (out of the box), Via integration (needs an add-on) or Not supported.

Home Assistant and Homey

Ways to add the Meross MTS300MA Matter Smart Thermostat

2 routesHow facts are sourced: every cell cites its source below
PlatformLeveliIntegrationDetailsEvidenceLimitations
Home AssistantVia Matter[2][3] (Matter certified; Home Assistant does not name the model)matterMatter / Wi-Fi
  • Quality: No score[2][3]
  • IoT class: Local Push[2][3]
  • Works with Home Assistant: Not certified[2][3]
Model namedNone stated
HomeyVia Matter[2][4]matterMatter / Wi-FiModel namedNone stated
About these columns
Level
How the device gets into the platform on this route. The headline is the best route: local before cloud, direct before bridged, core before community. The methodology page lists every level.

Certifications

Certification records

1 recordHow facts are sourced: every cell cites its source below
ProgramCertificateCertified onTransportSpec / softwareSource
MatterCSA24507MAT43962-24wi-fi, bluetooth9.3.2[2]

Cite this page

Meross MTS300MA Matter Smart Thermostat. Smart Home Canon. https://smarthomecanon.com/devices/meross-mts300. Last checked 2026-10-20.

Sources

  1. [1]
    MFRshop.meross.com / Meross Matter Smart Thermostat for Cooling and Heating System, MTS300MA - Meross Official Store
    Accessed Back to text
  2. [2]
    CSAon.dcl.csa-iot.org / Matter DCL compliance: MTS300, PID 57345 (part E001A000), software 9.3.2
    Accessed Back to text
  3. [3]
    DOChome-assistant.io / Home Assistant: Matter integration
    Accessed Back to text
  4. [4]
    DOCsupport.homey.app / Homey Support: Matter for Homey (Add a Matter device to Homey)
    Accessed Back to text