Schneider Electric Illuminated double headed push button head, Harmony XB5, plastic, 22mm, 1 green flush I + 1 pilot light + 1 red projecting O.
Manufacturer reference ZB5AW7L3741. Illuminated double headed push button head, Harmony XB5, plastic, 22mm, 1 green flush I + 1 pilot light + 1 red projecting O