What the description tells you
The 2TLA040037R0800: The description string — "JSM A56-2000 GUID RAIL AL INCL SCRE" — breaks down as the JSM A56-2000 series guide rail, aluminum construction, with screws included. This is the mechanical guide rail for the JSM safety switch range, used to align and mount the switch actuator on machine guarding frames or sliding doors.
