I am new to AudioMoth usage. I’m trying to set an AM to record bat sounds nightly on a 3 hour or so nightly schedule. I have the High filter set ay 30 kHz and I only want to record and save files that actually have bat sounds to the 64GB microSD card. The AM device will be left in the field for about one month. Therefore I need to limit the recorded files to about 2GB per night. I seem to be getting a lot of files with no bat calls. Can someone help me with setting the sleep record times and an initial amplitude frequency setting to start with? Thanks much for the help.