Schurter MSM 19 Series Illuminated Push Button Switch, Latching, Panel Mount, 19.1mm Cutout, SPST, Blue LED, 30 V dc,

The Schurter MSM19 series of push button switches are available in a variety of specifications. They all provide a high-quality stainless steel housing, which makes all switches highly reliable and extremely durable.

With or without surface backlighting in different colours
Certain models available with single-pole and double-pole switching system, switching
status is easy to discern by looking at or feeling the resting position of the actuator