Siemens 6AG1321-1FF01-2AA0 Digital Input Module — Legacy Replacement. Digital inputs: 8 DI; Compatible equipment: 6ES7321-1FF01-0AA0; Ambient temperature range: -40…+70 °C.
***spare part*** SIPLUS S7-300 SM 321 20-pole based on 6ES7321-1FF01-0AA0 with conformal coating, -40…+70 °C, digital input isolated 8 DI, 120 V/230 V AC