- Programmable Logic Controller (PLC), SIEMENS PLC Systems
Siemens Simatic S7 200 digital input EM 221 module 6ES72211BF000XA0
- 6ES72211BF000XA0 Siemens SIMATIC S7-200, DIGITAL INPUT EM 221, OPTICALLY ISOLATED 8DI, 24 V DC FOR S7-21X CPU ONLY, ** PRODUCT DISCONTINUED 6ES7221-1BF00-0XA0
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