The radio plug-in dimmer has the same construction as the radio switching socket FS20ST Part No. 62 30 04-62. However, the connected lamps can not only be switched, but instead their brightness can also be controlled. It can be used with conventional bulbs (resistive loads) & conventional halogen transformers (inductive loads). The integrated timer allows switching on briefly for 1 s up to 4.5 h or dimming up & down softly during the timer period.