I would suggest the following edits:
Change this
From a phone or tablet, users will run a mobile app that connects to the smart device through a secure wireless connection.
TO
From any mobile device, users will run a mobile app that connects to the smart device through a secure wireless connection.
I love what you did and wouldn't change a thing if this is truly for a Board of Directors. If you are trying to reach a more technical group or a specific business function, I would consider making a new one with more depth around the message you want for the other constituents.