FRITZ!DECT 200 Service - Knowledge Base
Cannot enable DECT Eco function
For technical reasons, the "DECT Eco" function is no longer available when an outlet switch, for example FRITZ!DECT 200, is registered with the FRITZ!Box. The DECT ULE (Ultra Low Energy) protocol itself already reduces the volume of data.
Note:If you are no longer using a FRITZ!DECT, you can delete it under "Home Network > Smart Home" in the FRITZ!Box user interface.