Housing 12 LEDs for a red light or 6 for green, the high-impact thermoplastic LED exit sign (NXP Series) has a slim snap-fit faceplate and housing for easy maintenance. The NVS1 clear polycarbonate vandal shield can be added for an extra level of protection from flying objects without obscuring the sign's visibility or diminishing its light output. In the event of a power outage, the NXPB (Battery Backup) Series can remain illuminated for 90 minutes.