This is a rough beta build and I still have some fine tuning to do and I still have to add in the LCD (The one i had in the box seemed to stop working halfway through the build #sadface) I also did not record audio but the speaker in the bottom left of the box is working. When you press the Temp/Volt button it emits two quick beeps to let you know it got data. If the gas sensor detects X particulates it'll emit 20 quick beeps for an alarm. Also if your temp exceeds 120, or falls below 32 it throws a warning.
But for the first build its working!