Federal Signal's Litestak status indicator is a column of signal lights that indicate the status of a process or machine. The units may include up to five Light Modules (Model LSL) available in amber, blue, clear, green and red; or four light modules plus an optional Sound Module (Models LSS or LSH) to create a dual purpose audible visual status indicator. The Sound Module always occupies the top position of a Litestak unit. Litestak's lensing provides a 360 degree visual signal. Individual light modules may be set to either flash or burn steadily. The flasher is included with the 120 VAC LSB model and sold separately for other voltages. Each light module consists of two Impact resistant polycarbonate lens halves that snap apart to provide easy maintenance and interchangeability of colors. Litestak units can be installed on a 3/4 pipe mount or surface mounted with the Model LSB Base. If low profile surface mounting is required, Model LSBS is available. Multiple lens colors can communicate machine shutdown, shortage of materials, supervisor attention, etc. Ideal applications for the Litestak include assembly lines, instrument panels, work cells, etc. Federal Signal`s Litestak is an economical device for increasing productivity in any manufacturing environment.