The Siemens 3RG4024-0KB00 is an inductive proximity switch with a 15 mm sensing range and a supply range of 20-265 VDC/AC, normally open output. It detects metal targets without contact, used in position sensing, end-of-travel, and part-presence applications in industrial machinery and conveyor systems.
The 15 mm sensing range is the rated operating distance for a standard steel target — derate for other metals (approx. 60% for aluminum, 70% for brass). The 20-265 VDC/AC supply means it works on both DC and AC control circuits, common in mixed-voltage panels. The NO output is normally open; verify your PLC input or relay coil logic matches.