The SpaceLogic KNX Universal Dimming Extension is a dimming actuator that extends the channels of a SpaceLogic KNX Universal Dimming Master. For independent control of up to 2 dimmable loads such as dimmable LED lamps, incan -descent lamps, HV halogen lamps, LV halogen lamps using dimmable wound transformers or electronic transformers or dimmable compact fluorescent lamps. (leading and trailing-edge phases)