Which radiators are compatible with the Gigaset thermostat?

These manufacturers and threads are compatible without adapters:
Wingenroth (Wiroflex), Zehnder Gewinde (M 30 x 1,5), R.B.M., Schlösser, Siemens, Simplex, Tiemme, Valf Sanayii, Watts, Comap, Heimeier, Honeywell-Braukmann, Idmar, Jaga, Junkers, Landis&Gyr „Duodyr“, Mertik Maxitrol, MNG, Oventrop (Gewinde M 30 x 1,5)

These manufacturers are compatible with the supplied adapter:

The Gigaset thermostat is compatible with 95% of all radiators available in Germany. Further adapters can be obtained from the trade. An overview of all adapters and compatibility at a glance can be found here