Siemens Simatic S7-300 Digital input, isolated, 8 DIProduct Overview SIMATIC S7 200 Digital Input Module EM 221 A discontinued spare part digital input module designed for legacy SIMATIC S7 200 controller systems. This optically isolated 8 channel digital input module provides reliable 120 230V AC signal processing for industrial automation applications requiring AC input signal monitoring. Important Note: This product has been cancelled since January 18, 2022, and is available only as a spare part for
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Siemens Simatic S7-300 Digital input, isolated, 8 DI