Annunciator windows are used in alarm annunciation panel. These windows are available in two sizes, 36x72 mm and 52x72 mm. Window is molded in white color ABS plastic. Front bezel is molded in black color ABS plastic. These annunciator windows are designed to fit PCB at back side. Transparent acrylic sheet can fix between window and snap-n-fit bezel. Two holes on front face are given to mount window on panel with m3 screws.