I thought I would come in here and add on to this comment by lynnehd about ADOR1 in COLD TEMPERATURES .
That first link to environmental testing was to show we tested the original design down below - 20 deg F. We did find, with more testing, that the lubrication in the motor's gearbox could cause so much resistance to motion that it would give problems when extremely cold and it only occurred if we "soaked" the ADOR being tested, at low temperature for many hours. So we changed the lubrication to a thinner lubrication inside the gearbox. That was way back in 2012, and we use the thinner gear lube ever since.
We do not test production units over temperature (that would take too long) but we trust the production units should behave as designed. In five years, I think I've only been contacted on two events of trouble in extreme cold (out of many thousands installed in cold country) and I've probably received more communications regarding wishing the door did NOT open when very cold.
Heheheh -- so, what to do? The ADOR1 and ADOR2 both have temperature sensors built in! They always have. But we did not have the software to activate and implement their usage. So new software is coming out which will allow you to select a cold temperature below which the door will be inhibited from opening in the morning. Then when it warms up (if it warms up later in the day) the ADOR will open then. ...or if it stays below temperature all day, it never opens that day. The temperature will not make it shut when it gets colder, of course, it only affects opening, not shutting.
If the ADOR cold temperature sensing interests any of you, please check the AdorStore.com website BLOG for future postings about availability of new software.