The Koolatron Bark free- Pro Series- Dog
training Device has a specially designed sound selector that lets you
choose ultrasonic frequencies which can only be heard by dogs, or lower
sound tones audible to human ears. Both sounds have been shown effective
in training dogs to stop barking. ProSeries Bark Free's pick-up
sensitivity adjustment allows you to control how loud the bark must be
to trigger the correction tone, while reducing any false triggering.
Bark free is weather resistant, but not waterproof. Direct exposure to
water will temporarily reduce the sensitivity of the microphone and
speakers. But using a weather resistant outdoor case you can use it
outdoors. The unit includes mounting slots and screws for fastening on
it to a building or post.