The device in the image is the
Dazer II, a handheld ultrasonic dog deterrent designed to repel aggressive dogs and discourage unwanted barking.- Technology: It emits a high-frequency ultrasonic sound (20–25 kHz) that is typically inaudible to humans but discomforting to dogs, triggering an immediate reaction to back away.
- Design: Made from lightweight, high-impact plastic, it includes a belt clip for portability.
- Power: It is powered by a standard 9V battery, which can last for approximately 3,000 signals (up to 5 years of typical use).
- Range: The device is effective for deterring attacks and stopping barking from a distance, with some sources listing an effective range of up to 20 feet (6 meters) or more.
- The Dazer II is frequently used by pedestrians, joggers, and cyclists for personal safety against aggressive animals, as well as by veterinarians and behaviorists for humane training to correct behaviors like excessive barking.