De Zehnder Stork switch SA 1-3V built-in.
This three-position switch is supplied with two different nameplates, namely
Stand 1 / 2 / 3
Stand 0 / 1 / 2.
Please note that you can select 1, 2, 3used with domestic fans such as mechanical ventilation and MVHR units.
The switch is powered by 230 volts and has the RAL colour 9010..