Siemens 6EP1332-4BA00 SIMATIC PM 1507 24 V/3 A stabilized power supply for SIMATIC S7-1500 input: 120/230 V AC output: 24 V DC/3 A: Amazon.com: Industrial & Scientific
Siemens 6ES7 231-4HF32-0XB0 SIMATIC S7-1200, Analog Input, SM 1231, 8 AI, 10V, 5V, -2.5V, OR 0-20MA/4-20 MA, 12 BIT + Sign OR (13 BIT ADC): Amazon.com: Industrial & Scientific
SIEMENS BASIC PLC PROGRAMMING with SIMATIC S7-1200: Programming and Testing with STEP 7 Basic, Configuring, TIA PORTAL, SIMULATOR 3D Edition: 9798417124938: Computer Science Books @ Amazon.com
Siemens S7 1200 PLC Trainer, Analog, Software, Ethernet ~ Training Starter KIT with TIA Portal (S1200AWS): Amazon.com: Industrial & Scientific