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Siemens - 6ES72141AG400XB0 - PLC, Logic CPU, 14 Digital In 10 Digital Out, Ethernet, 24 VDC, S7-1200 Series - RS
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32 inputs (DC 24 V) Digital Input Module for S7-300 - 700-321-1BL00 – Helmholz Sales online store for Helmholz parts in North America
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Amazon.com: Siemens 6ES7 212-1AE40-0XB0 SIMATIC S7-1200, CPU 1212C, COMPACT CPU, DC/DC/DC, ONBOARD I/O: 8 DI 24V DC; 6 DO 24 V DC; 2 AI 0-10V DC, POWER SUPPLY: DC 20.4-28.8 V DC,
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