By having the proper lighted sign can be beneficial because it notifies people of what is going on before they enter the room. At Phillips Safety we offer the “X-Ray is On” Illuminated Radiation Sign. This sign requires it to be hardwired at 120 VAC. It measures 7.5 inches high, 12 inches wide and 2 inches depth. The “X-Ray is On” sign is LED and features a steady or flashing option. Remember, safety first!