Siemens 6ES7 231-0HC22-0XA8 SIMATIC S7-200 CN, Analog Input EM 231, for S7-22X CPU ONLY, 4 AI, 0-10V DC, 12 BIT Converter: Amazon.com: Industrial & Scientific
Siemens 6ES7 331-1KF02-0AB0 SIMATIC S7-300, Analog Input SM 331, OPTICALLY Isolated, 8 AI, 13 BIT Resolution, U/I/RESISTANCE/PT100, NI100, NI1000, LG-NI1000, PTC/KTY, 66 MS Module Update, 1 X 40 PIN: Amazon.com: Industrial &
IoT Architecture: Allen-Bradley PLCs to Amazon AWS | The Automation Blog
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