Notifier FPTI-951-IV Multi Criteria Detector (Ivory)The Notifier FPTI 951 IV is an intelligent plug in addressable multicriteria detectors for Notifier SLC loops using FlashScan or CLIP protocol. This detector reduces false alarms and is more effective at detecting fires with its three sensors: photoelectric sensor to detect smoke, thermal sensor to detect heat and rate of rise 135F and infrared sensor (PTIR). It replaces the FAPT 851 series.