ZBZ28 Schneider Electric

ZB5AS844 - Emergency stop head, switching off, plastic, red mushroom Ø40, Ø22, trigger and latching turn to release

XB5KSB - Complete buzzer, plastic, Ø22, continuous or intermittent tone, 24 V AC/DC

ZB5AA1 - Push button head, plastic, flush, white, Ø22, spring return, unmarked