The TRED30-16R Logger has an audible alarm. The alarm is configured on the main configuration screen when configuring the recorder.

 

Please note, that continual activation of the audible alarm will reduce the working life of the battery. When an alarm event is triggered, the alarm should be cleared as soon as possible.

The beeper will temporarily turn off when you are reviewing data.

Having trouble clearing your audible alarm? Have a look here.