Lot of 2 Pulsecom model 4TDM-1L2 time division multiplexing channel units

Lot of two Hubbell / Pulsecom time division multiplexing units, model 4TDM-1L2. These modules have bar code stickers marked "D105056-1 Rev B".

These are from the estate of an industrial telecommunications engineer and ham radio enthusiast. We don't know much about them. We have not tested these and the boxes are worn and dirty from storage.