Honeywell Analytics SS4-AUV2 Multi-Spectrum Electro-Optical Digital Fire & Flame Detector, Aluminum UV, FM, Hydrocarbon & Non-Hydrocarbon Fires, indoor applications, Non-latching Alarm LED, FM, cFM, IECEx Zone 1 (2) M25 with MA420-4 4-20 mA Module for SS4 Detectors - SS4-AUV2-C-E-M