Battery Backup
Products with battery backup contain a battery so in the case of a power outage the lights or signs with stay illuminated for roughly 90 minutes.
Steel
Steel Exit Signs
Metal
Metal
Vandal Resistant
Products that are designed to be installed in a location (or devices) where they may be subject to vandalism.
2 Circuit
2 Circuit
White
Most product that have white housing color are made of a thermoplastic material.