Edwards 102 Series StackLight is a unique audible visual signaling device that may contain up to five light modules and a pulsating horn in a single, integrated stack. Two optional sounder modules are also available. The Triliptical diffusion optic lens allows viewing from close up while still projecting the light through use of a built-in projection ring. The lens modules are available with LED, Incandescent, Halogen or Strobe light sources. Options for steady-on or flashing are available. The 102 Series offers a shorter base for panel or conduit mounting as well as a taller base, designed for use with a sounder module.