Features This product is compatible with SIMATIC S7-200. For long-term backup data, can be inserted in the memory submodule slot of the S7-22X CPU. The memory battery inside the PLC is empty, so it is recommended to replace it to protect the program from loss. Product performance is reliable. Light weight, easy to use. Functionality: This product is compatible with SIMATIC S7-200. For long-term backup data, can be inserted in the memory submodule slot of the S7-22X CPU. The memory stack inside the PLC is empty, so it is recommended to replace it to protect the program from loss. The performance of the product is reliable. Light weight, easy to use. Specification: Model: 6ES7291-8BA20-OXAO Weight: 5g/0.2oz Working temperature: -30 -70 ℃ Suitable: for SIMATIC S7-200 Package list: 1 * memory battery card Note: The actual color of the product may vary from the photos due to the light. There may be a slight deviation in the measurement of the product. Package List