﻿It is optionally possible to automatically change the colour temperature proportionally when dimming the brightness. This makes it possible with little project planning to simulate a thermal radiator using almost any colour temperature controllable lamp (perception of the light source such as an incandescent or halogen lamp). This parameter can be used to set the behaviour of the colour temperature during relative dimming of the brightness for the application mentioned.

*Change proportional to brightness*: During relative dimming of the brightness with a 4-bit dimming telegram, the colour temperature of the group or single device is also changed proportionally. The colour temperature becomes warmer when dimming down. The colour temperature becomes colder when dimming up. The colour temperature can also be controlled separately.

*No change*: The relative dimming of the brightness by a 4-bit dimming telegram has no effect on the colour temperature of the group or single device. The colour temperature can be controlled only separately. 

