What is the difference between customized delivery and empty delivery when purchasing modules?

Custom Delivery: Tuya factory will burn the firmware (i.e., software program) and authorize the module. Customers can use it directly after purchase.

Empty Delivery: The module does not contain firmware (software program) and requires developers to burn and authorize it themselves before use.

Note: Due to the inability to achieve large-scale production burning for small batch module orders, manual operation is required. Therefore, for orders of less than 100 units, we will charge a burning fee of 200 RMB. For orders of more than 100 units, customized delivery is the default.

The content is as shown in the figure below: