I bought two 4 wheel systems which I have in my cars, $25 CAD each.
When the batteries died, there was no signal to the display, and I had no alarm going off, only a reading of 0 psi.
So if you have a 4 wheel system, and 2 wheels don't spin to activate out of sleep mode, then you don't have a signal to the display. No alarm.
Only issue would be how to mount something like a flat screen onto a MC. Easier on the IS.
Thanks for the info. I had planned on using blue tooth to my phone . I usually have it on the handlebars when I'm traveling for the maps. Once you explained it that makes sense.