M4A Heating Thermostat – Electric Floor or Gas Boiler
Set your heating temperature from a clear wall display instead of relying on a basic dial. The M4A thermostat comes in electric underfloor and gas-boiler versions, with Wi-Fi on the labelled electric options. It is for owners upgrading controls on a compatible heating system.
- ✅ Read current and target temperatures together — The display keeps both readings visible when you check the heating.
- ✅ Adjust heat from your phone — Choose an electric Wi-Fi version for Tuya Smart or Smart Life app control.
- ✅ Fit heating around your routine — Wi-Fi versions allow scheduling through the mobile app.
- ✅ Match the heating circuit — Separate electric-floor and gas-boiler versions provide the appropriate control type.
- ✅ Keep settings after a power interruption — Memory retains saved settings when power returns.
Choose the control version for your heating system
Select Electric 16A WiFi for compatible electric floor heating, or Gas Boiler 3A for a compatible boiler control circuit. These versions have different connections and are not interchangeable. Only options explicitly labelled Wi-Fi should be selected for app-based control.
The electric-floor version includes an external floor sensor alongside its internal sensor. The gas-boiler version uses its internal sensor and does not include the floor probe. Black and white finishes are shown; choose the appropriate option photograph.
Check the wiring, load and wall-box dimensions against your installation before ordering. The thermostat is a heating controller, not a heater or boiler.
Choose a version labelled Wi-Fi if you need phone control.
The external floor sensor is included with the electric-floor version only.
Compare the face and rear dimensions with your wall box.
Current temperature, target temperature and operating indicators share one display.
Tuya Smart and Smart Life control apply to Wi-Fi versions.
Compatible voice services require a Wi-Fi version and account setup.
Set heating periods in the app on Wi-Fi versions.
The gas-boiler version has a different connection layout from the electric-floor version.
The electric-floor version includes a floor-temperature probe.
Touch controls give direct access at the wall.
The square face sits over the recessed control section.
Check rear clearance before installation.
Choose the finish shown for your selected variant.
Black and white finishes are separate choices.
Follow the wiring and mounting instructions for the exact version.
Technical details
- Model: M4A
- Power supply: 100–240 V AC, 50–60 Hz
- Versions: 16 A electric floor heating with Wi-Fi; 3 A gas boiler
- Temperature setting range: 5–35°C
- Stated accuracy: ±1°C
- Sensor: NTC 10K; external probe with 16 A electric version only
- Protection rating: IP20
- Face dimensions: approximately 86 × 86 mm
- Mounting: 86 mm square or compatible European 60 mm round box
- Package: 1 thermostat, 2 screws, English manual; external sensor with electric-floor version only
Match the M4A version to your heating system and make everyday temperature adjustments easier.
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