The LED APX series is a UL924 code compliant solution for indoor exit requirements. Battery backup (APX7) with a maintenance free nickel cadmium battery. Will operate for a minimum of 90 minutes during a power outage. The APXRG exit series are supplied with both red and green LEDs and red and green face inserts to provide deep letter colors and illumination uniformity. The series are supplied pre-set to red letters and are easily changed to green letters in the field. The APXRG series configurable single or double faces, snap-in/snap-out directional chevrons and universal surface ceiling, wall and end mounting make it a true universal exit solution for stocking and installation needs. The high impact, UV resistant, 5VA flame resistant thermoplastic housings resists discoloration due to age or UV exposure for maximum durability. Housing finishes are available in white or black for multiple design requirements.