Questions regarding Ultrasonic devices and uses. Ultrasound is higher than the typical human hearing range, with the low end at 20khz. Ultrasonic distance and Proximity meters are common. Be careful around Chiroptera and marine life. Your dog might not like it either.

Questions regarding Ultrasonic devices and uses. Ultrasound is higher than the typical human hearing range, with the low end at 20khz. Ultrasonic distance and Proximity meters are common. Be careful around Chiroptera and marine life. Your dog might not like it either.

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