Product Code: 6ES7321-7RD00-0AB0 (SM321, 4DI, DC24V, HAZARDOUS AREAS)
Brand: Siemens
SIMATIC S7, digital input SM 321, isolated, 4 DI; 24 V DC, NAMUR/DIN 19234,
for signals from the hazardous area, diagnostics-capable, PTB tested
look to all details https :https://mall.industry.siemens.com
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