Features:

Outdoor dog bark deterrent device that uses ultrasonic waves to prevent dogs from barking.
The Small house is used to decorate the garden, and the house is a scenic spot.
Ultrasonic dog bark deterrent device, durable and weatherproof.
Safe, humane bark control method that can be used for almost all breeds and sizes of dogs.
Testing the outdoor dog bark deterrent device:

Set the mode switch to TEST.
The dog barking deterrent device has four adjustable ultrasonic sound volume levels: test, low, medium, and high. The bark control device has 4 adjustable ultrasonic sound volume levels, but each dog has different levels of adaptability to the bark silencer, so please rotate the knob to test different frequency bands to achieve the best effect. Hold the indoor bark deterrent device with the indicator light facing towards you. To trigger the gentle operation of the pet bark deterrent device, loudly say "woof" into the microphone. 4 Modes: T - Verify if the microphone and speaker are working properly. 1 Low Range (up to 15 feet) 2 Medium Range (up to 30 feet) 3 High Range (up to 50 feet)

Notes:
The bark control device is not suitable for deaf or hearing-impaired dogs.
Humans cannot hear ultrasonic waves. When preparing to use the outdoor bark control device, it is best to keep the device at a certain distance from the ear. Each dog has different adaptability. Barking may not stop at first, so please allow 2 weeks for training.
Specifications:
Dimensions: 5.2 x 5.19 x 6.77 inches
Weight: 0.8 pounds
Power: 1 x 9V battery (not included)

Package Includes:
1 bark deterrent device
1 x user manual
1 x lanyard