The unit looks nice and has large speakers to cover a larger area, I followed the download link on the QR sticker on the front of the unit and was able to figure out the settings easily, I was surprised when on the medium setting that everyone in my family was hearing the waves though it is ultrasonic, once set to high it became unusable in an area with humans in it, so it has a very strong loud signal and I wish it was water proof so I can stick it just outside my basement where the mouse seems to be hanging, another thing is that there is no light indication to show if the unit is on or not, pushing the manual button on top of the unit will cycle though low/med/high so I figured out how to check it without the app, I would be careful in a small room as the sound waves will be bouncing all over the place and definably make the place not livable when set to med/highm finally it has been running for a few days and sight of a mouse