The Festo SMTO-1-PS-K-LED-24-C is a proximity detection switch from the SMTO-1 Type series, classified under Limit and Proximity Switches. It's designed for detecting the position of machine elements without physical contact, typically in pneumatic actuator or linear motion applications where a compact, reliable sensor is needed.
If your panel was specified around the SME-8M-DS-24V-K-5,0-OE, the SMTO-1-PS-K-LED-24-C is a different sensor type — the SME-8M is a magnetic reed switch with a cable connector, rated 500 mA switching output, normally open, operating 10–30 VDC. The SMTO-1-PS-K-LED-24-C is a proximity detection switch with an LED, but its exact electrical design (PNP/NPN), switching current, and connector type are not listed in the same detail. Without a datasheet cross-check on the mounting footprint and electrical pinout, assume they are not drop-in interchangeable. Verify the physical interface and wiring before swapping.