We used silica gel bags when there were big temperature changes to reduce condensation but I doubt this really makes much difference. We've not had any other reports of devices failing to make recordings so see if it happens again, and we can try to see if there is any pattern to it.
I am sure.I set the same periods(UTC) as before that are not changed.The first week they worked well after I set .And they became unstable last two week.
See what happens the next few times. What weather conditions are they deployed in? We had one report of a couple of devices that got very hot in direct sun which caused them not to make any recordings. Apart from that they are generally reported to work as intended.
Yes.I put them in the plastic bags.
That is impossible.I deployed them in forest under 20.
I am sure.I set the same periods(UTC) as before that are not changed.The first week they worked well after I set .And they became unstable last two week.
Yes,I did.I tried again and again before.But they worked again yesterday!Are they unstable?I think so.