My Mahindra 5525 has triple remotes
Mine were installed by my dealer when I bought the tractor last March ($750 parts and labor).
You need remotes to handle implements that have hydraulic cylinders, like my hay baler (Massey Ferguson 124) to raise and lower the hay pickup
and my sicklebar mower (an Allis Chalmers 80T) to raise and lower the cutter bar
.
Currently I'm adding a hydraulic cylinder to my restored Minneapolis Moline P3-6 grain drill to rainse and lower the seeding mechanism
The brackets for the hydraulic cylinder are C-clamped and need to be welded. I'll do that as soon as I finish constructing that pole frame equipment shed visible in the background.