under the order
Name:
SIMATIC S7, digital
Article:
6ES7321-7RD00-0AB0
Category:
PCS 7 process control systems
Price:
on request
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
Download instructions at Siemens
If you have additional questions contact the manager