This is the patented collar that uses ultrasonic sound to humanely restore peace and quiet for those vexed by a dog’s nuisance barking. When a dog barks while wearing this collar, a built-in microphone detects the sound, causing the unit to emit a harmless high-pitched tone—inaudible to humans—that startles the animal into silence.
The dog eventually associates its bark with the unpleasant sound, which conditions him to curb this undesirable behavior. An LED lights when the collar is operating and shows battery status. The rugged nylon collar fits up to a 28″ neck; alternately, the unit can be removed and attached to an existing collar up to 3/4″ wide.
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