The ABB 2TAZ224201R2634 is a push button operator head with a green illuminated dome cap, designed for 22.5mm panel mounting holes. This operator combines a tactile push-button function with an integrated colored indicator light, all within a single, compact module. The green illumination provides clear visual feedback (e.g., "power on," "system ready," "cycle complete") at the point of operation. This is an operator module that must be paired with a compatible contact block (for the switch function) and/or a lamp holder base (for the light function) to form a complete electrical device.