4 Modes Dog Barking Control Devices Up to 50 Ft Range Dog Training & Behavior Aids, Ultrasonic Dog Barking Deterrent Devices Outdoor Weatherproof, Indoor Anti Barking Device Safe for Human & Dogs Features: 1. Use ultrasonic to stop dogs from barking 2. Birdhouses are designed to decorate gardens and houses are a sight to behold 3. Durable and Weatherproof. 4. Safe and humane method for bark control, can be used on almost breeds and sizes of dogs Test outdoor barking control 1. Set the mode switch to TEST. 2. Hold the anti barking device with the indicator light facing you. The ultrasonic anti barking device should maintain arm's length with your ears. 3. In order to trigger the work of the anti-barking device, say "Woof" loudly into the microphone. Specification: Size: 6.97 x 5.28 x 5.24 inches Weight:11.7 ounces Power: 1 x 9V battery (not included) Modes: T - Verify the microphone and speaker are functional 1 - Ultrasonic Low Range(Up to 15 feet) 2 - Ultrasonic Medium Range(Up to 30 feet) 3 - Ultrasonic High Range(Up to 50 feet) Notes: 1. The product will not work on deaf or hearing impaired dogs 2. Humans cannot hear ultrasonic sounds. however, precautions should be taken when preparing the outdoor bark control for use It's best to keep the dog barking device one hand's length away from the ear. 3. The adaptability of each dog is different. The barking will not stop at first, so please allow up to 2 weeks for training. Package includes: 1 x Anti Barking Device 1 x User Manual 1 x lanyard