That's rapid camp. My controller is on the ceiling of a storage compartment. I believe another post on the forum put their's under the bed.
If you search the forum for Rapid Camp" there may be a posting from a Miramar owner that gives the location.
Also, the system is manufactured by Lippert Components and if you go to their web site you can download the manual. Lippert does call the system something else but Thor calls it Rapid Camp.
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk (Toad)
FMCA - F432054