Need Help connecting old Sears keypad and inside button to new Chamberlain

I recently installed a new Chamberlain B2401 and all is working, however, I want to connect the old 10 button keypad and partner inside button (2002 Sears model - see pictures). 

I have their
white and red stripe wire pair originally connected to white and red terminals on the old Liftmaster unit.  There's also a power supply which I think is associated to those older buttons.

Any guidance or insight on if and how these can connect to my new unit would be appreciated