The Model SS4-A represents the world´s pre-eminent UV/IR technology for Electro-Optical Fire and Flame Detectors with thousands successfully operating in a multitude of installations worldwide. This Multi-Spectrum Detector senses radiant energy in the Ultraviolet (UV), Visible and Wide Band Infrared™ (WBIR) 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 cover more hazard area. Greater sensitivity also increases the volumetric area covered by the Detector, up to four times more than some other detectors. 

Using sophisticated signal processing algorithms with complete spectral information, virtual immunity to false alarms from arc welding, corona discharge and other common UV sources is achieved.

The Model SS4-AS is a version of the Model SS4-A, which while retaining all the features of the standard SS4-A, is optimized for the detection of ethanol, methanol, hydrogen and natural gas.