When using SD card for our products, we recommend high durability MLC type products.
Due to the nature of security products, read / write is frequent.
Therefore, it is recommended to use SD card with high durability.
Recommended SD Card Manufacturers are:

• Sandisk, Transcend
• SanDisk HIGH ENDURANCE
• ProductsTranscend High Endurance Products

Speed Class

In general, we recommend Speed Class UHS-1 class to use SD card,

UHS-3 and more than 16GB memory is recommended for 4K Camera.