OTIS AAA AK235T26 has a mirrored stainless steel button and an outer ring that lights up a beautiful white. LEDs are concealed in the switch and glow bright white when 18 to 24VDC is connected to terminals on connector. Mounts in 1.05" hole (no mounting nut available). Switch is momentary N.O. (Normally Open) and closes when the button is pushed. Size of outer ring is 1.18" x 0.82" deep. Brand new.