Onyx Industries manufactures Stack lights and industrial indicating systems. The Command Tower brand of stacklights is made with Stainless Steel and other metal shell housings making them suitable for heavy industrial environments. Common Applications are machine status monitoring, Andon lights for lean manufacturing initiatives, and production management. They communicate with machine operators and plant floor personnel with visual color and audible alarms as a first line of defense in machine up-time. Onyx Industries can provide custom PLC based solutions to applications requiring Stack Lights as well.