The NICOR EXL4 Series LED Emergency Exit Sign features an ultra-slim 1-inch profile crafted from durable, flame-retardant thermoplastic for a lightweight and easy installation. Equipped with an integrated nickel-cadmium battery backup, it provides 90 minutes of dependable emergency illumination during power outages while consuming just 1.6 watts of power. It includes a mounting bracket with EZ quick-connect for wall or ceiling installation, dual-voltage compatibility (120/277V), an extra faceplate for double-sided conversion, and directional chevrons. Damp-location rated and backed by a 1-Year Limited Warranty.