Schneider Electric, Harmony, ZB4BC5, Mushroom Push Button Head Ø40, Metal, Yellow

Amazon

Progress with confidence designed for industry Flexibility and a robust construction An ingenious locking system consisting of a snap-fit head and body, tightened with a single screw, ensures easy yet secure mounting

Radwell UK

PUSH BUTTONHEAD, ELECTRIC XB4 SERIES, YELLOW, MUSHROOM, SPRING RETURN, 22 MM CUTOUT, IP66