Hello, the main difference between these two is the antenna type: TYZS3-IPEX is an external antenna, and TYZS3 uses an on-board antenna. Since the firmware of the module needs to be adapted to the product, it is recommended to create a corresponding product. In the third step of product creation, the modules that can be selected for the corresponding product will be displayed. If it is not displayed, it means that it is not supported.