The product code "6ES7952-1KM00-0AA0" you mentioned corresponds to a Siemens PLC (Programmable Logic Controller) module. Here is some information about this module:

Description: The 6ES7952-1KM00-0AA0 is a memory card module for Siemens S7-300 and S7-400 series PLCs. It is specifically categorized as an MMC (MultiMediaCard) module.

Usage: This module is used for storing and transferring program and data files in Siemens PLC systems. It provides removable memory storage that allows easy backup, restore, and transfer of program data between different PLC units.

Compatibility: The 6ES7952-1KM00-0AA0 module is compatible with the S7-300 and S7-400 PLC series. It can be used with various CPU modules in these series to expand the memory capacity of the PLC system.

MMC Specifications: This module supports MultiMediaCard (MMC) standards and features. It has a storage capacity of up to 128 MB, allowing you to store a significant amount of program code, data, and configuration information.

Application: The MMC module is widely used in industrial automation applications where Siemens PLCs are employed. It allows users to conveniently exchange program and data files, enabling quick changes or updates to the PLC system without the need for extensive rewiring or reprogramming.