What happens if a dSM is defective? digitalSTROM Support September 26, 2018 07:05 Updated Follow Devices without digitalSTROM functions are not impaired in their function. digitalSTROM devices can still be switched via their local push-buttons (e.g. a floor lamp with cord dimmer). The dSM must always be replaced in this situation. Related articles Does a digitalSTROM meter (dSM) have to be reconfigured after an exchange? What is the difference between a dSM11 and a dSM12? Is the dSM equipped with surge protection? A dSM does not respond although the LED is on How often are the energy readings updated in the dSM?