Siemens 6AG1321-1FH00-7AA0 Digital Input Module — Legacy Replacement. Digital inputs: 16DI; Compatible equipment: 6ES7321-1FH00-0AA0; Ambient temperature range: -40…+70 °C.
***spare part*** SIPLUS S7-300 SM321 16DI/120/230VAC based on 6ES7321-1FH00-0AA0 with conformal coating, -40…+70 °C, digital input isolated 16 DI, 120/230 V AC, 1x 20-pole