Siemens 6ED10521FB000BA8 LOGO 230 RCE Logic Module 8 Input 4 Output 115 Volt AC 230 Volt DC: Amazon.com: Industrial & Scientific
Amazon.com: SIEMENS Logo Module 6ED10521MD000BA6 : 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