Siemens SM321 Digital input, isolated, 16DI, 20-poleProduct Overview SIMATIC S7 300 Digital Input SM 321, Isolated, 16 DI, 24 V DC, 1x 20 pole This high performance digital input module provides sixteen isolated digital inputs with reliable 24V DC signal acquisition capability. Each input channel features galvanic isolation for enhanced safety and noise immunity, making it ideal for connecting switches, proximity switches, sensors, and other digital devices in demanding industrial automation
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Siemens SM321 Digital input, isolated, 16DI, 20-pole