SIEMENS SIMATIC S7-1200 Analog Input/Output Module 4 Analog INPUTS/ 2 Analog OUTPUTS 6ES7 234-4HE32-0XB0: Amazon.com: Industrial & Scientific
Siemens 6ES7 241-1CH32-0XB0 SIMATIC S7-1200, Communication Module cm 1241, RS422/485, 9 PIN SUB D (Female) Supports Message Based Freeport: Amazon.com: Industrial & Scientific