MEROSS MTS155MAT Smart thermostat
Description
About this product
The Meross MTS155MAT smart thermostat lets you conveniently manage the temperature in your home and reduce unnecessary energy consumption.
Matter over Thread
The thermostat supports Matter over Thread, so it works with Apple Home, Google Home and Amazon Alexa. You control it from the app or with voice commands for Siri, Alexa and Google Assistant. You don't have to go to the radiator to change settings. Matter features require a compatible controller with a Thread border router.
Heating schedule
In the Meross app you can set up a schedule that automatically changes the temperature at selected times. You'll set a higher temperature in the morning and evening, when you are at home, and a lower one while you are away. Constantly adjusting the radiator by hand is not necessary.
Open window detection
When a window is opened for ventilation, the thermostat can pause heating for a while. The radiator then does not work unnecessarily, and the settings do not need to be changed manually.
Automatic valve maintenance
You enable this function in the Meross app. The thermostat regularly performs a full cycle of opening and closing the valve, which is intended to prevent limescale buildup and mechanism blocking. This maintenance supports smooth valve operation and maintains accurate calibration.
Valve adapters
The thermostat has an M30 × 1.5 connector, and the set includes adapters for Danfoss RA, RAV and RAVL, Giacomini, Caleffi valves and M28 × 1.5. This makes installation possible without replacing the entire radiator.
Specifications
| Manufacturer | Meross |
| Model | MTS155MAT |
| Device type | smart radiator thermostat |
| Wireless connectivity | Thread 1.4, Bluetooth LE 6.0 |
| Technology | Matter over Thread |
| Compatible systems | Apple Home, Google Home, Amazon Alexa |
| Control | app, voice commands |
| Connector | M30 × 1.5 |
| Power supply | 2 × AA 1.5 V battery (not included, disposable batteries) |
| Dimensions | 8.2 × 5 × 5 cm |
| System requirements | iOS 17 or later, Android 8.1 or later, Bluetooth 4.0 or later |
| Matter requirements | Matter controller with a Thread border router |
| Operating temperature | from 0°C to 40°C |
| Storage temperature | from -40°C to 70°C |
Notes
Batteries are not included.
To use Matter features, however, you need a compatible Matter controller with a Thread border router, e.g. Apple HomePod mini, Amazon Echo 4th generation or Google Nest Hub 2nd generation.
Description
About this product
The Meross MTS155MAT smart thermostat lets you conveniently manage the temperature in your home and reduce unnecessary energy consumption.
Matter over Thread
The thermostat supports Matter over Thread, so it works with Apple Home, Google Home and Amazon Alexa. You control it from the app or with voice commands for Siri, Alexa and Google Assistant. You don't have to go to the radiator to change settings. Matter features require a compatible controller with a Thread border router.
Heating schedule
In the Meross app you can set up a schedule that automatically changes the temperature at selected times. You'll set a higher temperature in the morning and evening, when you are at home, and a lower one while you are away. Constantly adjusting the radiator by hand is not necessary.
Open window detection
When a window is opened for ventilation, the thermostat can pause heating for a while. The radiator then does not work unnecessarily, and the settings do not need to be changed manually.
Automatic valve maintenance
You enable this function in the Meross app. The thermostat regularly performs a full cycle of opening and closing the valve, which is intended to prevent limescale buildup and mechanism blocking. This maintenance supports smooth valve operation and maintains accurate calibration.
Valve adapters
The thermostat has an M30 × 1.5 connector, and the set includes adapters for Danfoss RA, RAV and RAVL, Giacomini, Caleffi valves and M28 × 1.5. This makes installation possible without replacing the entire radiator.
Specifications
| Manufacturer | Meross |
| Model | MTS155MAT |
| Device type | smart radiator thermostat |
| Wireless connectivity | Thread 1.4, Bluetooth LE 6.0 |
| Technology | Matter over Thread |
| Compatible systems | Apple Home, Google Home, Amazon Alexa |
| Control | app, voice commands |
| Connector | M30 × 1.5 |
| Power supply | 2 × AA 1.5 V battery (not included, disposable batteries) |
| Dimensions | 8.2 × 5 × 5 cm |
| System requirements | iOS 17 or later, Android 8.1 or later, Bluetooth 4.0 or later |
| Matter requirements | Matter controller with a Thread border router |
| Operating temperature | from 0°C to 40°C |
| Storage temperature | from -40°C to 70°C |
Notes
Batteries are not included.
To use Matter features, however, you need a compatible Matter controller with a Thread border router, e.g. Apple HomePod mini, Amazon Echo 4th generation or Google Nest Hub 2nd generation.
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