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Your dog's bark automatically triggers corrective ultrasonic bursts to help correct boredom or annoyance barking habits 4 speakers Selector switch for ultrasonic or audible settings Sensitivity selector slide switch adjusts to your dog's barking pitch Test button Wall mount or built-in standing design Powered by 50ft power supply adapter (included) or 4 "D" Batteries (not included) Batteries lasts approximately 2000 >sound releases under normal conditions. Twin dual piezo-ceramic transducers. 50 FT Low-lead cable included Up to 50 ft radius coverage area


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