Schurter TTS Series Illuminated Push Button Switch, Momentary, Panel Mount, 22.1mm Cutout, SPST, Red/Green LED, 60V dc,

The Schurter TTS series touchless momentary push button (NO) or as latching switch made from stainless steel housing material and it has potential free output contacts. It used 4 wires for connection and it operates precisely. It protected against unintended switching.

Variable supply voltage
High reliability
Wiping and cleaning the surface does not trigger a switching operation