6ES7222-1BD22-0XA0 Siemens | Siemens SIMATIC S7-200 Series Series PLC I/O Module for Use with SIMATIC S7-200 Series, Digital | 468-5778 | RS Components
Ethernet Compatible with Siemens S7-200 series CPU226 DC/DC/DC PLC controller 24 in 16 Transistor output PID RTC PPI - AliExpress
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Amazon.com: Compatible with Siemens PLC Programming Cable S7-200/300/400 Data Download Line 6ES7972-0CB20-0XA0,USB/MPI PC Adapter USB Cable for Siemen S7-200/300/400 PLC MPI/DP/PPI Programming Cable : Electronics