Functional Devices RIBMNLB-4 SKU: RIBMNLB-4 $91.45 $182.90 Quantity -+ Add to Shopping Cart Limited Factory Stock Details Functional Devices RIBMNLB-4 : 2.75" Track Mount AHU Fan Safety Alarm and General Purpose Logic Circuit, 24 Vac/dc Power Input, 4 Alarm Inputs all wit... Data Sheet DetailsData Sheet Back Functional Devices RIBMNLB-4 : 2.75" Track Mount AHU Fan Safety Alarm and General Purpose Logic Circuit, 24 Vac/dc Power Input, 4 Alarm Inputs all with N/C Outputs, Made in USA, UL Listed Back