Functional Devices RIBMNLB-4NO SKU: RIBMNLB-4NO $110.85 $221.70 Quantity -+ Add to Shopping Cart Limited Factory Stock Details Functional Devices RIBMNLB-4NO : 2.75" Track Mount AHU Fan Safety Alarm and General Purpose Logic Circuit, 24 Vac Power Input, 4 Alarm Inputs with N/O... Data Sheet DetailsData Sheet Back Functional Devices RIBMNLB-4NO : 2.75" Track Mount AHU Fan Safety Alarm and General Purpose Logic Circuit, 24 Vac Power Input, 4 Alarm Inputs with N/O Outputs , Made in USA, UL Listed Back