Led exit/emergency sign, with double head lamps, nicad battery back up, high power remote capability to run 2 led remote heads, red letters on white thermoplastic housing, dual voltage 120/277 uses less than 2w energy, can be configured as single or double facing directional knockout, chevrons ul damp location rated, snap fit construction for under 5 minute installation, snap fit canopy included, universal j box mounting pattern, 8-1/4"h x 16-9/16"w x 2-5/16"d, for shipping purposes the led double head lights are stored inside the fixture, ul924 nfp101 compliant.