On iOS/iPadOS, Luminair isn't compatible with USB to DMX interfaces. It isn't possible to communicate with these devices due to lack of drivers on iOS/iPadOS.

On macOS, Luminair supports one of universe of DMX via Enttec's DMX USB Protocol. This makes it compatible with Enttec DMX USB Pro, Enttec DMX USB Pro Mk2, and DMXking's ultraDMX interfaces.