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Ultrasonic:
The primary feature of your device is
the ultrasonic signal. This is a high pres-
sure sound that is only slightly audible
to humans. However, it is very effective
at startling and scaring away unwanted
pests. Using a variable pulse generator,
the ultrasonic emits a range of uctuating
sound waves to prevent the pest from
becoming accustomed to the sound.
Using the Frequency dial: In order to use
the ultrasonic signal to best effect, you will
need to become familiar with the ultrason-
ic Frequency dial. Remove the back cover
from your device. It should snap off just
like a lid. The Frequency dial is located in
the top middle. It is the largest dial.
You will see a variety of ranges indicated
around the dial. These ranges are identi-
ed by the animals they ideally repel
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