FYI, that one isn't recommended for trailers. They have a link to a "newer" one that is recommended for trailers. Still 87 PSI but its $160. I'm not sure that being limited to 87 PSI is a bad thing, I'm much more concerned with a dropping tire pressure and would set a minimum threshold, not a maximum threshold. Looking at the questions, it says it has a max pressure of 99 lbs.
It also monitors temperature somehow (not sure how that works on a valve stem).
Anyway, deal of the day for $63 I bought one and I'll see how it does. The 87 PSI doesn't worry me. The 36' range could potentially be an issue, but it looks like they have a range extender. If it doesn't work, I'll return it. That's a good deal though!
2015 Ram CTD
2015 Jayco 29QBS