You can use the outlet switch, radiator control, and the smart button, for example FRITZ!DECT 200, FRITZ!DECT 301, and FRITZ!DECT 400, in the reception area of the FRITZ!DECT Repeater if FRITZ!OS 6.50 or later is installed on the FRITZ!Box. The LED light FRITZ!DECT 500 does not support the repeater function.