Auto Reset Rate of Rise Heat Detector SKU: NB323-4AR Please log in to see price or purchase this item Quantity discounts available QuantityPrice DetailsDetails4 Wire Rate of Rise/Fixed temperature Heat DetectorDual LEDs for 360 visibility Optional flush mounting ring (FMR-100)Relay output N/C or N/O selectable relay 98mm(Dia) x 46mm(H) with baseTechnical SpecificationTechnical SpecificationDocumentationDocumentation