Suitable for dogs from 6 months old to 8 years old. When the device works on 3 frequency levels,the light will flash blue every 6 seconds. The red light stays on 3 seconds when the sonic bark deterrent is triggered by barking.
eBay
Ultrasonic Bark Arrester Anti Bark Device Ultrasonic Dog Barking Control Stop Repeller Trainer Tool
Aliexpress UK
No collars, no shocks – just a gentle yet effective deterrent to excessive barking. Versatile Multi-Mode Mastery: Tailor the solution to your dog's unique needs with our versatile multi-mode functionality.
eBay
Ultrasonic Bark Arrester Anti Bark Device Ultrasonic Dog Barking Control Stop Repeller Trainer Tool
Aliexpress UK
Model: Ultrasonic Dog Repeller. Type: Ultrasonic Dog Repeller. 1 x Ultrasonic Dog Repeller. Ultrasonic: 125dB. Multi-functions : except as a pet training tool, it also can prevent you from dog attacks, fit for training many kinds of dogs, such as pets, dogs in police and shepherding, suitable for outdoor work, travel and security night patrol.
eBay
Automatic anti-barking device for dog barking control, rechargeable ultrasonic dog barking deterrent
Aliexpress UK
When the device works on 3 frequency levels,the light will flash blue every 6 seconds. The red light stays on 3 seconds when the sonic bark deterrent is triggered by barking. Automatic Dog Barking Stopper Electric Anti-Bark Pet Training Collar Waterproof.
eBay
1/5PCS Dog Whistle To Stop Barking Barking Control Ultrasonic Patrol Sound Repe-llent Repeller Pet
Aliexpress UK
1 x Bark Arrester. Item Type: Bark Deterrents. Training supplies: It can be used as a tool to train your pet and improve the bad behavior of dogs. Portable: It can be used as a portable tool to drive away dogs when they are mad outdoors, so as to protect their own safety.
eBay
Dog Repeller Ultrasonic Pet Anti Barking Stop Control Bark Training Device High Power Dog Repellent
Aliexpress UK
Working Principle: The ultrasonic dog repeller emits 25KHz waves (audible to dogs 15Hz-50KHz), which don't harm. 1 x Ultrasonic Dog Repeller. but deter barking and aggressive dogs. 30-foot range for effective bark prevention.
eBay
Bark Stopper Automatic Dog Barking Control Device Ultrasonic Dog Repeller Bark Stopper for Indoor
Aliexpress UK
Training Mode: Emits lower intensity ultrasonic waves to assist in daily dog training such as stopping excessive barking, fighting, biting and correcting other unwanted behaviors. Indoor and outdoor & easy to use.
eBay
Pet Dog Anti Barking Repeller LED Ultrasonic Control Device Stop Bark Training
Aliexpress UK
The ultrasonic dog trainer detects barking through the microphone and emits a safe high-pitched ultrasonic wave, which can be heard by dogs but not by people. The dog will stop barking when stimulated by ultrasonic wave.
eBay
Ultrasonic Tiger Cub Bark Control, Dog Barking Wall, Pet Barking Control,J-1302, J1302, 1Pc
Aliexpress UK