Edwards 101 series StackLight is a versatile signalling device that may contain up to five light modules and a pulsating horn in a single, integrated stack. The 85 dB pulsating horn can be operated as a sixth independent signal or in conjunction with any one of the five light modules available. The lens modules are available with LED, Incandescent or strobe light sources. Options for steady-on, flashing or multi-mode are available. Ideal for heavy-duty use in locations where visibility over longer distances is required.