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Meross MTS155 Thread Smart Thermostat Valve (EU)

Meross / MTS155, MTS155MAT, MTS155MATTRI

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Does the Meross MTS155 Thread Smart Thermostat Valve (EU) work with HomeKit, Alexa, and Google Home?

The Meross MTS155 Thread Smart Thermostat Valve is a radiator valve that connects over Matter over Thread, so it needs a Thread border router such as a HomePod mini or Nest Hub.

It runs on two AA batteries, fits M30 x 1.5 mm valves and needs no Meross hub. It suits HomeKit, Google Home, Alexa and Home Assistant users, with native support through Matter over Thread.

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

Key facts

Meross MTS155 Thread Smart Thermostat Valve (EU) facts

How facts are sourced: every cell cites its source below
FactValue
StatusCurrent[1]
TypeRadiator valve[1]
Heating systemRadiator valves, M30 x 1.5 mm[1]
StandardMatter over Thread[1]
HomeKitVia Matter[1]
Sold inEU[1]

Integration paths

How the Meross MTS155 Thread Smart Thermostat Valve (EU) connects

1 pathHow facts are sourced: every cell cites its source below
PathRequiresiLocaliFeatures lostPlatformsi
Matter / ThreadBRA Matter controller, A Thread border router[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 MTS155 Thread Smart Thermostat Valve (EU)

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 / Thread
  • 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 / ThreadModel 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
MatterCSA263TBMAT54351-24thread, bluetooth1.1.1[2]

Cite this page

Meross MTS155 Thread Smart Thermostat Valve (EU). Smart Home Canon. https://smarthomecanon.com/devices/meross-mts155. Last checked 2026-10-20.

Sources

  1. [1]
    MFRshop.meross.com / Meross Thread Smart Thermostat Valve, MTS155 - Meross Official Store
    Accessed Back to text
  2. [2]
    CSAon.dcl.csa-iot.org / Matter DCL compliance: MTS155, PID 57348 (part E004B000), software 1.1.1
    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