Edwards Signaling Genesis ceiling speaker-strobes are small, compact, and attractive audible-visual emergency signaling devices. Protruding no more than 1.6" (41 mm) from the ceiling, Genesis speaker-strobes blend with any decor. Signals feature textured housings in architecturally neutral white. An ingenious iconographic symbol indicates the purpose of the device. This universal symbol is code-compliant and is easily recognized by all building occupants regardless of what language they speak. Models with "FIRE" markings are also available. Kidde FullLight strobe technology produces a smooth light distribution pattern without the spikes and voids characteristic of specular reflectors. This ensures the entire coverage area receives consistent illumination from the strobe flash. Although all Genesis strobes are self-synchronizing, when installed with an optional synchronization module, strobe flashes from devices on the same circuit synchronize to within 10 milliseconds of each other indefinitely. This exceeds the two-hour minimum specified in the UL standards. Only one synchronization module is required per circuit. 1/4 W to 2 W operation is selectable with a conveniently located switch on the front of the device. The wattage tap setting remains clearly visible even after final installation.