How can fluorescent lamps (FL) be used? digitalSTROM Support September 24, 2018 06:06 Updated Follow GE-KL200 should be used to do so. Related articles How can I use low-voltage halogen lights? How often are the energy readings updated in the dSM? How should an apartment be prepared so that a digitalSTROM installation is possible at a later date easily? How is it possible to use energy saving lamps (ESL)? How does the support help me?