- Programmable Logic Controller (PLC), SIEMENS PLC Systems
Simatic S7 300 SM 321 PLC Digital Input Module 6ES73211BH500AA0
- 6ES73211BH500AA0 Siemens SIMATIC S7-300, Digital input SM 321, Isolated 16 DI, 24 V DC, Source input, 1x 20-pole 6ES7321-1BH50-0AA0
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