instaling a smart thermostat head an easy way to gain extra control and zone your heating. These heads can also call for heat when correctly set up. You simple way to. Control a radiator in a room
Mixed reviews, I have three, all fail to close fully when temp is satisfied. I believe it is due to the high pump pressure due to my micro bore type pipe work. Works for a lot of people as advertised.
You should really finish the video off showing the pairing process and then the need to calibrate the value. Fun and games but not too difficult, I just set up 8 of them.