5
the device will then randomly cycle through a whole range of frequencies.
4.
It’s advised to leave the unit operating 24HR. However, if required, change the
switch to Night or Day.
5.
If you don’t want to hear the device, turn the Sonic Volume all the way down to zero.
6. Find the animal category you want to repel on the frequency dial and point the knob
at the arrow on the left side of that category for birds, skunks, and deer, and on the
right side for rodents, cats, dogs, and bats. Other animals would fall somewhere in
between. Rabbits tend to respond to insects category. Take a look at the diagrams on
Page 11 of this manual for a visual representation.
PLACEMENT:
It’s important to place the device where it will be most eective. For ground animals, like
raccoons, coyotes, etc., place the unit near the height of the animal you want to repel and
facing the area where they most like to frequent. Don’t place it on the ground as this will
limit the eective range of the device. Using the screws, you can hang the unit on a wall,
tree, fence, stairs, or even on top of your mail box. If your device is o the ground and
higher than the animal’s eye-level, tilt it downward somewhat. For animals that nest in trees
– birds or squirrels – place the device on a tree or rooftop. The ultrasonic frequency has a
range of up to 70 ft (21 m), but the closer it is to the animal, the more eective it will be.
Ultrasonic signals cannot penetrate solid surfaces. Make sure there are no windows,
doors, fences or other items between the device and the area you want to cover.
The ultrasonic sound emits in a forward direction from the device with a range of about
170 degrees horizontal and 60 degrees vertical.
THE SCIENCE BEHIND IT
The Yard Sentinel™ comes equipped with a variety of useful features. You will need to
experiment to see which features or combination of features give you best results in
ridding your yard or other open area of pests.
Ultrasonic:
The primary feature of your device is the ultrasonic signal.
This is a high pressure sound that is only slightly audible to
humans. However, it is very eective 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 eect, you will need to become familiar with
the ultrasonic Frequency dial. Remove the back cover from
your device. It should snap o just like a lid. The Frequency
dial is located in the top middle. It is the largest dial (Fig. 3).
You will see a variety of ranges indicated around the dial. These ranges are identied
by the animals they ideally repel. Choose a range that best reects the type of animal
you are trying to repel. Insects and large animals are repelled by lower frequencies
(counter-clockwise). Rodents are repelled by higher frequencies (clockwise).
Fig. 3
6
Fig. 4
Ultrasonic signals travel in a forward direction. You will need to point the device towards
the area where you are having the pest problem. The signal will range 170 degrees
horizontally and 60 degrees vertically from the unit (Fig 4).
Note: If you have a cat or a dog you may have to turn the device o when they are in the
yard. This depends on the frequency you are using because cats and dogs can have very
dierent levels of hearing depending on age or size. Other types of pets such as rodents
or insects may be more sensitive. Ultrasonic waves cannot penetrate surfaces, so put
them in a box or leave them behind and out of range of the device.
Sonic:
In addition to the inaudible ultrasonic signal, your device
is equipped with a sonic signal. This helps to scare o any
people or pests lurking around your property or large
animals such as bears, coyotes, racoons, skunks and birds.
At full volume, the sound can be heard up to 300 ft (91m)
away. It can also act as a security alarm for your yard.
How to use: The sonic signal is controlled by the Sonic
Volume dial. To turn it up, turn the dial all the way
clockwise. If you nd the sonic noise bothers you or your
neighbours, you can turn it o by turning the volume dial
all the way down (counter clockwise) or simply lower the
volume at your discretion. Adjusting the Sonic Volume will not
aect the ultrasonic signal which emits at a xed rate.
Infrared Motion Sensor:
Your device can be set to activate only when animals come into
range. Set the mode switch to“Motion Sensor”to select this feature.
When an animal or human enters the range of the device within
45 ft (14 m), a red light will go on and the device will activate both
the ultrasonic and sonic. The range of the sensor may vary due to
ambient temperature.
The Motion Sensor is equipped with a dial that controls its sensitivity (Fig. 5). Turn it all the
way up to ensure it works as well as possible (30). If you nd the device activates when
there are no animals in the yard, turn it down to about 25.
Note: You can test your device to see if it is working by switching the mode to “Motion
Sensor” and walking or waving your hand in front. If you see the red light, you will know
the movement has been detected. If the Sonic Volume is turned up, you will also hear the
alarm/harassment noise. The ultrasonic signal may also be slightly audible to some people.
Fig. 5
Operating Time
24 HR
Day
Night
Fig. 6
