Central room temperature controller for ERR underfloor heating

Ask your heating engineer about the cheapest solution for actuators and thermostats. Then you take the thermostats out of the wall and put on a blanking plate so that nothing is visible anymore. Controme is a system that claims to be able to control the heat pump for every room. If you have understood the posts here, it should be clear to you that something like this does not work with a normal house installation at all.

Does anyone know the underfloor heating control from Controme?

Here, temperature sensors are mounted directly on the return flow at the HKV for direct feedback of the temperature. Would that allow me to save a thermostat in the room itself?

Most heat pumps are return-flow controlled, so why would you install an additional return-flow controlled control?

Well, that is overengineering at its best.

The cheapest that is possible, why should you throw more money out the window than necessary?

For the underfloor heating actuator, I only find systems from Homematic. Actuator 190, actuators around 20 EUR, and thermostats around 45 EUR.

Does anyone know other systems?

Möhlenhoff actuator Alpha 5, for underfloor heating, NC, incl. 1x adapter ring VA80 ~ 10 Euro/piece

MÖHLENHOFF R20203-10N4 Alpha room temperature controller 230V analog ~16 Euro/piece

MÖHLENHOFF B 21402-06N2 Alpha system base station, 230V, NC, neutral 6 to 10 zones ~ 50 Euro

Thank you. Unfortunately, these are not the radio variants. The alpha 2 is also around 200 EUR.