Cultural and heritage sites are in most cases irreplaceable architectures, which often curate vast collections of works of art, archives and furniture. To blemish stucco or paintings on ceilings with conventional fire and smoke detectors is inappropriate in most cases. Such buildings and sites require a special fire protection solution that goes further than merely being unobtrusive. An Early Warning Fire Detection system with multiple alert levels builds the foundation of an effective and reliable fire protection scheme that includes trained staff able to deliver a decisive response to all alerts signalled.