The Backlighted Annunciator is used for applications where the detail of the Graphic Annunciator is not required, and where it is necessary to see the alarm condition from afar. We mostly see the Backlighted Annunciator being used for Nurse Call applications. The Backlighted Annunciator has a grid style design. With the grid design, a cluster of white LEDs or incandescent lamps, are placed in each legend secton, and is accompanied with customer supplied text. In an alarm situation, the entire grid section will light up.
The main advantage of the Backlighted Annunciator is that an entire section lights up, and thus, it is easier to see.