The human hearing range is 20-20,000 Hz, while dogs can hear frequencies between 15-50,000 Hz. Portable pet bark collars emit ultrasonic waves at 25,000 Hz—a frequency inaudible to humans—producing an instant, intense “explosion” sound that startles dogs and serves as a deterrent.

The 25,000 Hz sound is inaudible to humans, causing no disturbance or irritation. Dogs can hear it and are effectively stimulated by it, yet it poses no harm to them.

Portable Pet Bark Deterrent

• Mode 1: Ultrasonic Mode. Press and hold the switch button to emit a 25kHz ultrasonic wave to alert the dog. The sound will continue until the button is released or automatically stops after 8 seconds.
• Mode 2: Ultrasonic and Flashing Mode. Press and hold the switch button to activate 25kHz ultrasonic waves and flashing lights to deter dogs. The device will continue until the button is released or automatically stops after 8 seconds.
• Mode 3: LED Lighting Mode. Press and hold the switch button to turn on the light. Release the button to turn off the light.
• Applicable Pets: Cats, Dogs
• Suitable Locations: Home, Outdoors, Travel