The SSC-100-EL hallway sign provides a clear indication of a room's availability with enhanced contrast and visibility as part of a complete Crestron enterprise room scheduling solution. The SSC-100-EL features a stylish appearance and vivid color illumination that complements any corporate office environment. The two-sided, gray acrylic sign face illuminates bright green or red to indicate the room availability status. The sign face is custom engravable with the room number, name, icon, or other designation. The complete sign assembly mounts into a cutout in a drywall or drop-tile ceiling.