I have two of these, one for emergencies & in it's box in the caravan & the other at this moment in time is under the bonnet of my truck as it is parked nose end in & down a slight slope to the front of my shed.
I put it on last week the day before i went into hospital........
Just out of curiosity I have been out & switched it off & then put it back on, but it did not reset itself, it's not a problem.....
The problem would be if the battery was flat & i needed to go some where rather quick & the wife was at work ...
With something compact like this the bonnet can be left locked down & secure