Siemens S7-300 Cartão SM321 16DI - 6ES7321-1BH50-0AA0
Siemens S7-300 Cartão SM321 16DI - 6ES7321-1BH50-0AA0
SIMATIC S7-300 SM321 Digital Input, 16P Source, 24VDC
S7-300 SM 321 Digital Input Module, (16) 24V DC Digital Inputs, Sourcing, 20-Pin, Optically Isolated
https://mall.industry.siemens.com/mall/en/WW/Catalog/Product/6ES7321-1BH50-0AA0
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