4Hookup DiagramsFig. 2: Optional hook-up using two (2) isolated power inputs.Fig. 7: Normally Closed Latching FACP trigger input with re-set. (This output has not been evaluated by UL).Fig. 6: Normally Closed Non-Latching FACP trigger input.Fig. 5: Normally Open Latching FACP trigger input with reset.(This output has not been evaluated by UL).Fig. 4: Normally Open Non-Latching FACP trigger input.Fig. 3: Polarity reversal input from FACP output circuit(polarity is reference in alarm condition).