The part number you provided, 6ES7321-1BL00-0AA0, corresponds to Siemens PLC module. Specifically, it is a input module from the Siemens SIMATIC S-300 series.

Here are some details about this module:

It is a 32-channel digital input module.

The input module operates with a supply voltage of 24 V DC.

The module has 32 individually configurable inputs, capable of handling different types of signals such as voltage or current.

It supports various input signal ranges, allowing for flexible connectivity to different devices.

The module is designed for use in the Siemens SIMATIC S7-300 modular PLC system, which is widely used in industrial automation applications.