That's what Room tronic does automatically. Now you get an intelligent energy saver. Roomtronic replaces the old thermostat - just screw it on. With the big handwheel you can use Roomtronic as easy as a thermostat valve. Easy operating with 3 buttons and big display for feedback.
Quick installation causes no dirt or water spots.
Main power is not necessary. Take it with you when you move house. Without tools, and without expert assistance. Now your heating gets smart.