RAVL VALVES: allows you to adapt modern thermostatic heads (thermostat) in 1.5 thread to RAVL type radiators
LANDIS & GYR VALVES 24mm: use included washer for Landis and Gyr 24mm compatibility
Compatible with: AVM, Devolo, Fritz!, Fritz!Dect301 and 302, Innogy, Moes, Heimeier HEIM9700-30.700, Homematic, Honeywell, Tado, Tafo.
26 mm: The inner diameter of 26 mm is perfect for RAVL and Landis & Gyr type radiators
EASY: Just 4 screws to tighten! Allen key included.