LAMP INCANDESCENT BA9S 110V; For Use; LAMP INCANDESCENT BA9S 110V; For Use With:EAO 04 Series Illuminated Flush Mount Pushbutton Switches; Bulb Size:T-1 3/4 (5mm); Lamp Base Type:BA9s; MSCP:0.3; Operating Temperature Max:50 C; Operating Temperature Min:-25 C