Can I power 3 tablets/panels via Konnected Alarm Panel Conversion Kit?

Can the Konnected Alarm Panel Conversion Kit power 3 Kindle Fire tablets?

I have an old alarm system wired with 3 keypads.  I have 1 tablet now but eventually want to replace all keypads with a modern interface like repurposed tablets.

Looking for advice on what Konnected hardware to start with.

This is an older posting asking a similar question and they ended up using a separate 120V AC to 12V DC converter.