Architectural acrylic edge-lit sign for applications requiring low-profile yet decorative appearance. Uses included but are not limited to museums galleries office building lobbies etc. Incorporates 25 year LED source. AC 2-Circuit with letters in either green or red color.Features. Housing Color Aluminum. Letter Color Red. Number of Faces Single. Face Type Clear Acrylic. Operation 2-circuit. Voltage 120 or 277V dual input. Extruded aluminum housing and acrylic panel. 6 in. Letters. Mounting wall side or ceiling. Canopy and mounting hardware included. Testing High charge ready operation indicator light; test button. Circuitry protection Isolated surge short circuit protection; disconnect for deep discharge. LED and PC circuitry are rated for approximately 25 years with no change in illumination level. 2nd circuit for input from external EPS or other alternative emergency power source or generator. Finish - Mirror Aluminum