Control your heating from an app without touching the heating system: that is what smart radiator thermostats are for. The Bosch Radiator Thermostat II [+M] in anthracite replaces the dial on your radiator and, according to the manufacturer, can be connected either to Bosch Smart Home or via Matter over Thread.

What it can do

  • Either Bosch Smart Home or Matter over Thread.
  • Temperature adjustable in 0.5-degree steps.
  • Illuminated, adjustable display and a colored LED ring.

Who is it for?

For anyone who wants to control temperatures and heating times room by room with an app or a voice assistant. In rented flats, a thermostat head can usually be swapped without touching the heating system. If in doubt, check with your landlord first.

What to look out for

  • Hub: Bosch Smart Home needs a compatible Bosch controller. Matter over Thread needs a hub in your smart home system that supports Thread. Check the manufacturer's information to see what your system requires.
  • Valve: Check that the thermostat fits your radiator valve and read the manufacturer's notes on adapters.
  • Pick a system before you buy, because the setup differs by variant.

Verdict

The Bosch Radiator Thermostat II [+M] is interesting if you already run Matter or Bosch Smart Home, or plan to. If you don't have a smart home system yet, factor in the cost of the matching hub.

Information based on manufacturer details, as of 11 Oct 2026. We do not run our own hands-on tests. This article may contain affiliate links (ad).