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Siemens SIMATIC S7-200 EM231 Analog I/O Module, 2AI, front view | SIMATIC S7-200 PLC AIO Modules - Layout
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Siemens 6ES7 231-0HC22-0XA8 SIMATIC S7-200 CN, Analog Input EM 231, for S7-22X CPU ONLY, 4 AI, 0-10V DC, 12 BIT Converter: Amazon.com: Industrial & Scientific
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Siemens SIMATIC S7-200 EM 231 Analog I/O Module, 4I, front view | SIMATIC S7-200 PLC AIO Modules - Layout
Siemens SIMATIC S7-200 EM 231 Analog I/O Module, 8I, front view | SIMATIC S7-200 PLC AIO Modules - Layout
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A.13 Specifications For Em 231 Thermocouple, Em 231 Rtd Modules - Siemens SIMATIC S7-200 System Manual [Page 511] | ManualsLib
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Expansion Module Em231 Analog Input Ai 3 X 12 Bits - Siemens Simatic S7-200 System Manual [Page 384] | ManualsLib
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