6ES7321-1BH02-0AA0 by SIEMENS - Buy or Repair at Radwell - Radwell.com
Siemens 6ES7321-1BH02-0AA0 Simatic S7 Digital Input SM 321 - CNC BOTE
6ES7321-1BH02-0AA0 Siemens | Siemens SIMATIC S7-300 Series Series Digital Input Expansion Module for Use with SIMATIC S7-300 Series, Digital, 24 V | 453-2517 | RS Components