Zmodo DVRs, NVRs, Cameras, and Accessories use a SKU number instead of a Model Number.  If you contact technical support or request a warranty repair, you will be asked to provide the SKU number of your device.

You will first need to locate the Zmodo information sticker on your device as shown below:

The SKU number will be labeled on this sticker as the SKU Number.  If your sticker lists both an "Old SKU" and a "New SKU" then the New SKU is the number that you will need to provide.  If the sticker has an "Old SKU" you can simply ignore this number.