hi,my audiomoths worked a few days after I set the programme.And recently I placed them on feild as usual without any change,they can't work

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.

Hi, Did you set the time and the configuration again before you deployed them? If the battery had been removed they would have lost the time and configuration settings, and would not have made any recordings. Do they work correctly on your desk now?

the 2 time set:5:30-10:00,14:30-19:00.It worked well before. And it also worked at the first time after I reset it (when I found it's out of work).Then I placed them on the field without any change.they can't work.I checked everything before placed them. Yes,3 were all the same questions.

Hi, Can you describe in more detail the settings that you were using originally and what you mean when you say that they didn't work. Did the same thing occur on more than one device? Were there no recordings on the SD card?

The most likely reason is that the battery was dislodged or removed before deployment so the AudioMoth lost it's time setting or configuration. You should see that since when you switch to CUSTOM mode the two LED will flash together, rather than just the green LED telling you that it is waiting to make a recording.