I have an older GRAU lamp - can I get an WarmDim feature? 27 September 2022 14:21 Updated No, this is not possible. Related articles Is it possible to change the dimming technology of a GRAU lamp that I have already purchased? Can GRAU luminaires also be dimmed with DALI, 1-10V or Casambi? You can find spare parts here Dimming my lights is very important to me. Which type of dimming should I choose? What is sunset dimming?