Light Source Units: Type - Pushbutton Light Module; Size - 30.0 mm; Lamp Type - Incandescent; Power Source - Transformer; Voltage - 120VAC; Lamp Number - BA9S; Mounting - Front Mount; Additional Information - Operating Temperature: -25 to 70 degC (-13 to 158 degF)
Additional Info: Operating Temperature: -25 to 70 degC (-13 to 158 degF)