Bently Nevada | 3500/32M | 149986-02 | Spare 4-Channel Relay Control ModuleDescription The Bently Nevada 149986 02 is a Relay Control Module that is part of the 3500 series of components. This full height module features four relay outputs and can be inserted into any of the slots to the right of the Transient Data Interface Module. Specifications Part No.: 149986 02 Manufacturer: Bently Nevada Product Type: Relay Control Module Series: 3500 Dimensions (Height x Width x Depth): 241 mm x 24. 4 mm x 242 mm Weight: 0. 7 kg