Mini Outdoor Anti Barking Device - Ultrasonic Dog Bark Control

How The Outdoor Bark Control Works:When the outdoor bark control is within range of a barking dog, an internal microphone picks up the sound and the unit is automatically activated. The outdoor bark control emits an ultrasonic sound. The ultrasonic sound can be heard by dogs but is silent to humans. Startled by the high-pitched sound that is safe and effective, the dog should stop barking, it will associate its bark with this unpleasant noise. When the dog stops barking the ultrasonic sound also stops. The outdoor bark control has 3 range levels and a test mode. It is effective up to 50 feet.Features: Material: Plastic Size: 8*6.5*5cm Uses ultrasonic sound to deter unwanted barking Detects barks up to 50 feet with the use of an internal microphone 4 levels of operation including a test mode Durable and weatherproof for outdoor use Tow Color LED:Shows good or low battery Switch with 4 Levels of Operation: Test-used to verify the microphone and speaker are functional 1=Low Range-up to 15