Greetings @TRiley266
Welcome to the Roku Community and thanks for posting regarding your inquiry.
A Roku Smart Home subscription will cover up to 99 Roku Smart Home devices as long as they are linked to the same Roku account.
We hope this provides clarification and insight regarding your inquiry. If you have another inquiry or issue in the future, please don't hesitate posting in the Roku Community again.
Happy Streaming,
Danny
Danny R.
Roku Community Moderator