Since product marketing data is typically insufficient, this is only possible when actual performance capability is considered. Pfannenberg helps make this happen. Related products Flashing light PY X-S-05 [...] each device, Pfannenberg provides the dimensions for an acceptable output signal range that is needed to accurately plan visual and audible fire alarm systems. The dimensions for height, width, and depth [...] 1. Through understanding the actual signal-ling range, it becomes possible to determine the number of devices needed for a defined room or area. 2. The signalling range also defines the effective coverage