PUPKIDS 3 Modes Ultrasonic Dog Anti Barking Device for Indoor & Outdoor Use

3 Ultrasonic Modes: The dog barking deterrent has 3 adjustable modes to suit dogs with different personalities. Mode 1 emits 25 kHZ pulsed ultrasonic waves suitable for Obedient Dogs; Mode 2 emits 25 kHZ continuous ultrasonic waves suitable for Naughty Dogs. Mode 3 emits 23-25-27kHz variable frequency ultrasonic waves, suitable for Quiet Dogs. Please test different modes for the best results.
50FT Effective Range & Rechargeable: The ultrasonic bark stopper has an effective control range of 50 ft and can be used indoors and outdoors. The bark control device is rechargeable via USB and is fully charged in 2-3 hours and can run for 30 days.
Automatic & Dual Speaker: The anti-dog barking device is equipped with 2 powerful and effective sonic speakers, which will automatically sense the sound of dogs and emit ultrasonic waves through the two speakers to effectively stop dogs from barking. It is suitable for dogs of different breeds from 6 months to 8 years old.
Safe and Harmless : The anti-barking device uses upgraded ultrasonic technology and is specially designed according to the dog's hearing range. Ultrasound can only be heard by animals and will not cause any harm to dogs; They are inaudible to humans and don't affect humans.
Lightweight & Portable: This dog barking device is small and lightweight, easy to carry, you can hang it on the wall/fence/window or anywhere you want, so don't worry about your own or your neighbor's dog barking endlessly!