The sensitive microphones can automatically detect dog barking up to 50 feet away, Then dog barking control devices will automatically blast high-pitched sounds that only the dog can hear. Once the dog stops barking, the dog barking control device will automatically stop transmits ultrasonic sound.
Ultrasonic dog bark deterrent uses high-pitched ultrasonic sound technology. Ultrasonic sound is above the hearing range of humans, but it will make attention and stimulate to dogs. It is safe for humans and dogs.
Designed to be easily hanged.

Features:
1. Use ultrasound to stop dogs from barking;
2. Durable and waterproof;
3. Two-color indicator light shows whether the battery is sufficient;
4. Use a 9v battery for power supply (battery not included);
5. Switch and 4 levels Operation: OFF-turn off ; T mode-used to verify the function of microphone and speaker; mode 1-working range of 15 feet; mode 2-working range of 30 feet; mode 3-working range 50 feet.

Specifications:
Product Name: Outdoor Ultrasonic Bark Control
Colour: Black
Size: 15.5cm x 15.5cm x 16.5cm
Material: ABS plastic
Product weight: 450g

Note:
1.The LED light flashes when the battery is low, then the battery needs to be replaced (battery not included).
2.When placing or hanging it (the lanyard not included), please keep a distance from human to avoid impairment of hearing.
3.If the dog has hearing impairment, it may not respond to this product.
4.Due to different lighting and screen settings, the color of the item may differ slightly from the picture.
5.Due to manual measurement, please allow slight difference in dimension.
6. This product includes only an ultrasonic barking control device, excludes any other item, battery is NOT included.

What's in the box?
1 x Ultrasonic Bark Control