ULTRASONIC DOG REPEATERS
VIGOR RUN

RUN is a particularly useful ecological device, which emits ultrasound signals to avoid harassment by stray dogs, acting on their delicate auditory system and causing them a state of discomfort without physical or mental damage. The same device can be used to educate and train your own dogs; only your dog, being attached to you, will not go away.

Ultrasound signals: 25,000Hz
sound level 120db
Range of action: up to 10 meters
Runs on 9V alkaline batteries (not included)
Note:

The effect of RUN is based on the emission of ultrasound waves, there are several factors that can influence its effectiveness such as: distance from the animal, age, temperament, training (it has no effect on police or guard dogs), and state of health (e.g. deafness). Do not aim the device at people's eyes or ears. Do not leave the appliance in the hands of children; it can be used by them only in the presence of adults or after a thorough explanation of the relative modalities.