Post this On-Air A-Frame 120V "RECORDING" LED bright warning sign to alert those around the stage or studio that recording is in progress. Mounted Vertically, the black letters against the backlit Lexan makes a stark contrast and is easily visible against the polished aluminum frame. Mount the sign to an electrical junction box using the included 6-32 threaded screws, and wire it to your power switch with the included wire nuts for a clean, professional installation. The sign features a built-in 120 VAC to 12 VDC power supply that powers the 12 VDC LED light strip.