Rekall Dynamics Commercial ON AIR SIGN. Exact Same On Air Light as Used in Hundreds of Leading Facilities Worldwide. (Mains: 90-264vAC) On Air Light Supplied from the Manufacturer to Leading Music, Radio and Television Studios Worldwide Including Bose, Dolby, Pinewood, Film Roman, and Even Nasa and Facebook. An Industry Standard On Air Sign Designed for Commercial Use. These Are Not a Cheap Replica, Reproduction, Movie Prop or Knock Off. On Air Sign Uses SMD LED Ultra Bright Illumination with Integrated Internal Power Supply Which Accepts 12-24 Volts DC. A Metal Body with Shatterproof Polycarbonate Faceplate and Comes with Included Accessory Kit with Mounting Hardware and Access Tool. Thousands of These Have Been Sold by Rekall Dynamics and Grace the Walls of Some of the Best Facilities in the World.