1)CD w/ AB SL-500 PLC Tech-Data, User manuals etc... (PDF format) PLC System Master Parts List: 1)1747-L532 Central Processing Unit W\ 16k Memory 1)1746-P2 Standard Power Supply {120/240vac Supply Voltage} 1)1746-A7 7-Slot Rack 3)1746-IB16 24vdc 16pt. Input Module {Sink} Operating Range 10-30vdc 1)1746-IA16 120vac 16pt. Input Module {VAC} Operating Range 85-132vac 1)1746-OV16 24vdc 16pt. Output Module {Sink} 0.5 Amps\pt. Nominal @30 Degrees C 1)1746-IO12 Combo I/O Module {6pt. 120vac Input} {6pt. Relay-Output 0.5 Amps\pt. Nominal @30 C}