GBU643D*S GBU643D*S (GBU643D-S) Base Rack for S2T/S2, 4 Station Bus Slots, no I/O slots. N $590.00 | GIN653**S GIN653**S (GIN653--S) AC Input Module, 16 points, 100 to 120 Vac $340.00 | GBU668**S GBU668**S (GBU668--S) Base Rack for S2E,8 I/O Slots/ Expansion Rack for S2T/S2, $320.00 |
TBU104--S TBU104--S 4 Slot Expansion Card Holder for T1-16S, Holds 4 T1-40 I/O Expansion C $44.00 |