I think it's this valve, which is compatible. Okay, I've uninstalled them all but left one on. I've just done a test and it seems to be working now! I'll install the other three again tomorrow and...

Hi all Hi all. I bought a kit including 4 smart radiator valves, Hub & Thermostat. The Kasa valves screw directly onto the valve pictured but don't shut the radiators off when turned down. None of...