My converter did not have the IQ-Smart Controller circuitry built into it. I assume that Keystone installs the basic unit. I believe the designation for one with the internal controller is "DLS-55 w/ IQ Int".
I ordered the unit from Mastertech. It installs in just a few minutes. It took more time to decide where to permanently attach it to the cabinetry than anything else. After overcharging the batteries in a previous trailer, I believe it is worth the investment.
There is another thread in the "Improvements" discussion topics from December that has quite a bit of discussion on the IQ module. This will hopefully link you directly to it. Otherwise, expand the discussion topics to review "the past 120 days":
http://montanaadministrator.forumco....IC_ID~6990.asp