I've had one on my plane since Nov of 2019 (just in time for the 2020 mandate for the airspace around here) and it's been working just fine since DAY ONE, going on four years now.
My only tip? If possible, keep it out of direct sunlight for years on end...
The ones that have caused trouble (according to our local installer) were left outside to the elements for years...this is based on anecdotal evidence, not anything official.
That being said, we rigged up a cover for it....
Looks odd, but was effective in keeping the Sun from burning it, and birds off of it, and the snow, ice, frost, etc. A little TLC keep them going!
