OK, question. I currently have two TIU's and two DCS handheld remotes. The TIU's are Rev. L. Nothing ever upgraded. Been using them since 2013 and no issues. Handhelds show 2003, I think. One of my DCS handhelds has a "wobbly" thumbwheel, but it works for now.
1) Will a new version (current catalog) of the handheld communicate properly with my TIU's without any further upgrades ? Will I even get it if I order one ?
2) Is MTH reparing handheld remotes with bad thumbwheels ?
3) Best (easiest for an old dude) advice is appreciated.
Note: I'm almost 76 y.o., declining vision, declining mental acuity (not sharp as once was), can not safely use wifi app.
NEED SOME GOOD INFO OR ADVICE Thanks..........