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 Which GRAU lights have an integrated sensor system, such as motion sensor and constant light regulator? What method is used to dim GRAU lights, that are equipped with motion sensors and constant light controller? Can I also control luminaires with GRAU app control with a dimmer?