Adjustable ultrasonic whistle

Adjustable Ultrasonic Whistle Peluit ultrasonic yang bisa diatur ketinggian bunyinya. Telinga anjing, kucing dan burung sangat peka terhadap peluit ultrasonic. Apa yang anda dengar melalui peluit ini berbeda dari apa yang mereka dengar. Dengan peluit ini, anda melatih akan lebih mudah dan menyenangkan. This item has an adjustable pitch! ! Simply tighten or loosen the screw at the top of the whistle to determine the best frequency to use with your pet! The whistle operates at frequencies not heard by humans so much of the sound is heard only by your dog, cat and birds. You will hear the whistle but certainly not at the same level as they will hear it.