Spectrex SharpEye 40/40 D I 63-1-SC-Y-7 Ultra Fast Multispectrum Quad-Sense Flame Detector is part of the leading, next generation SharpEye 40/40 series. Featuring superior, longest distance detection of hydrocarbon fires at up to 300 ft (90 m), exceptional ultra-fast detection in under 50 msec and unparalleled reliability, the 40/40D-I is based on proven Triple-IR (IR3) technology, ensuring highest sensitivity with proven immunity to false alarms and absolutely keeping a SharpEye on your safety