The Model SS2-A, (latching Fire Alarm relay), & SS2-AN (non-latching Fire Alarm relay), represent the world´s preeminentUV/IR technology for Electro-Optical Fire and Flame Detectors, with thousands successfully operating in amultitude of installations worldwide. This Detector senses radiant energy in the Ultraviolet (UV), Visible and Wide BandInfrared(tm) (IR) spectrum. The radiant energy from all types of flaming fires will alert the detector to their presence.The field-of-view is the widest in the industry with a 120 degree cone of vision. This means each Detector can covermore hazard area. Greater sensitivity also increases the volumetric area covered by the Detector, up to four times morethan some other detectors.