For indoor placement. When the dog barks, an ultrasound is heard by the dog but not by most people. The dog associates the unpleasant sound with barking and learns not to bark. The device also has a button that activates the ultrasound, a device used for training.
* Ultrasound 25 kHz / 120 dB in three levels. * Range 3 - 10 m. * Battery: 3 x AA battery (not included). * Magnetic wall bracket included
More about cookies.