Business Central Device license

I thought customers must have at least one Essentials or Premium SAL when purchasing Device license, but I can't find any description of this prerequisite in the license guide nor license term.

To purchase a Team Member license, customers must have Dynamics 365 user SLs other than the Team Members SL according to the license term according to the license term.

https://www.microsoft.com/licensing/terms/en-us/productoffering/MicrosoftDynamics365Services/MCA#Addons

Is this not same for Device license or are customers allowed to purchase Device license only without other user licenses?

If customers are required to have other user licenses to purchase one Device license, can we apply a  30day-trial license (Business Central Premium) for the initial month?