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 available in amber, blue, clear, green and red or four light modules plus an optional sound module to create a dual purpose audible or visual status indicator. The sound module always occupies the top position of a Litestak® unit. Litestak® lensing provides a 360° visual signal. Individual light modules may be set to either flash or burn steadily. The flasher is included with the 120 VAC. Each light module consists of two impact-resistant polycarbonate lens halves that snap apart to provide easy maintenance and interchange ability of colours.