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Omron
Omron A16 Series Illuminated Push Button Switch, 16mm Cutout
Part: A16L-JA
Small rectangular illuminated push button for compact control panel applications.
Schneider Electric
Schneider Electric Harmony XB4 Series Blue Spring Return Push Button Head, 22mm Cutout, IP66, IP67, IP69K
Part: ZB4BA66
Blue metal push button that returns automatically after each press for machinery control.