Up until the Maestro 6 we did not necessarily include remotes with the Maestro pre-processor.
We supplied the IR codes with the manual so you can program a universal remote to control the Maestro.
You can find the manuals for those older Maestros here.
At the time, those Maestro’s were sometimes shipped with either a Universal Remote Control model MX-350, or a MX-500.
You can view our current version of the Maestro, the M9 here.