Herschel T-MT wifi-enabled thermostat

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Herschel T-MT Mains powered Wifi thermostat


Next Day Delivery
DIY Friendly
Reduce heating Cost
Highly energy efficient
2 yr Warranty
Zero maintenance


Herschel T-MT is a mains or micro USB powered compact thermostat control designed to work exclusively with Herschel XLS heaters with their built-in SMART-R receiver.

T-MT also has Wifi capability to allow you to control your heating remotely via the Smartlife App or by voice control using Alexa or Google Assistant.

T-MT features a manual temperature mode, a 7×1 day program mode and a holiday (or Away) mode. All modes will operate your Herschel heater(s) by turning them ON if the room temperature is lower than the desired temperature and will turn them OFF once the desired temperature is reached or exceeded.

The T-MT is designed to be easy to operate and incorporates the latest energy-saving features including Herschel’s open window technology and an adaptive start function ensuring your room is always at the right temperature with the least energy use.

The T-MT can  be paired to more than one heater meaning multiple heaters within the room can be controlled with the same T-MT thermostat.


Note: The T-MT will only work with Herschel XLS heaters. It is not possible to operate the T-MT with any other brand of infrared heater.



Download the T-MT Instructions.


Download the Smartlife App:





Technical Specifications

With a very clear backlit digital control display the T-MT has easy-to-use functions and the latest energy saving technology including:

  • 7 x 1 day programmable;
  • Manual and Away modes;
  • Window Open Function (shutting off the heating if a rapid drop in temperature is detected until you override this or wait 30 minutes);
  • Adaptive start (automatically ensures the desired room temperature is achieved at the time set);
  • Wall-mounted;
  • 5 – 40°C setpoint range and 0.5°C accuracy;
  • IPX0 protection – do not install in zones 0-2 in bathrooms;
  • Multiple Herschel XLS heaters can be controlled by one T-MT control;
  • App-enabled;
  • Voice control via Alexa or Google Assistant when used with the App.

Other Features:

  • Radio Frequency 433Mhz;
  • 2.4GHz wifi networks;
  • 35m wireless range;
  • 24 month warranty;
  • Herschel XLS Infrared heaters together with the T-MT Wifi Thermostat are fully compliant with EC Directive 2009/125/EC for Ecodesign of local space heaters.


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