Don't recommend! Rated 1 out of 5 stars
This add-on don't want save preset if you try put 1 sec reload and don't work !
There aren't any reason to install this add-on if it can't work very precisely in small intervals. Unfortunately it doesn't work in interval less than 2 sec.
Reload is implemented in Firefox and any better tab manager can do the same and better. Tab Mix Plus for example.