What are the functions of each digitalSTROM terminal block? digitalSTROM Support October 05, 2018 07:34 Updated Follow Overview on the functions of each digitalSTROM terminal block: Related articles Grey terminal blocks do not behave as expected, what can I do? What is the difference between SW-TKMxxx and SW-AKMxxx? Why do digitalSTROM terminal blocks have different colours? digitalSTROM Sonos Version 2 Why are there different grey terminal blocks?