The shorting pins near the Batteries/Super Capacitors will erase the memory when removed.
The two little switches near the edge will make it PERMANENTLY IN KEY MODE (SQUARE).
They were put there because some states have Tariffs that require systems with POOLS to have to pay more for their lines.
The others, I don't know. However, I do know that I have taken some CKE5's that didn't work, and made them work by putting the others in the right place. (As if, some one moved them around with out knowing what they were doing.)