Test #1 data
Test #2 data
Changes after testing
The only change we made was to lengthen the elastic string from 8 inches to 12, because we found during testing that the original string was not long enough to loop around a zipper hole.
Summary
During the testing process, we found that our device could be heard 60 meters away and also could be activated in 2.92 seconds. We believe that this testing proved our product to be effective, because the device can be heard from relatively far away and it can be activated quickly in an emergency situation. If we had more time after our testing, we would have liked to have made more changes to our design. We wanted to make the siren require a two-step initiation and would have liked to make the switch larger so it could be activated more easily.