Sentinel Ultrasonic Bird, Pigeon, Fox, Cat & Pest Repeller installation instructions and user guide

     Sentinel 4 way ultrasonic cat bird pigeon fox badger repeller deterrent right.jpg                      Sentinel 1 way ultrasonic cat bird pigeon fox badger repeller deterrent side 1

The Sentinel MKII Ultrasonic Pest repeller is weatherproof and designed for indoor or outdoor use. If using outdoors, the plug-in mains power adaptor MUST be plugged into a mains socket inside a building and never exposed to dampness or moisture. Do not remove the front cover of the unit as this will damage the weatherproof seal.

The Ultrasonic repeller is a fully adjustable, self contained module with frequency ranging from approx. 8kHz to 40kHz. At least 50% of this spectrum is in an audible frequency range and can be heard by humans, but the unit can be adjusted to a higher frequency to generate a silent Ultrasonic tone. Most of the successes reported with deterring birds, Pigeons, Mice, Rats, Cats, Dogs, vermin and pests in general have been achieved with unit set to the higher ultrasonic frequencies (silent), so it is sometimes best to experiment with the setting as many different local environmental factors and animal breeding / feeding cycles can effect the overall effectiveness. The Sentinel modules are not designed to scare animals or birds, but rather to create and maintain an environment that is uncomfortable which can cause them to move on and avoid the area.

The ultrasonic repeller can be mounted in a safe spot on a wall or fence post etc, a few feet above the ground. Ideally, the repeller should be at approximately the same height where your particular target pest habits. For example, if you are trying to repel birds on a roof, or Pigeons in a tree, the unit should be higher off the ground. But often you will need to compromise and the modules are supplied with an adjustable mounting bracket. Once set up and pointing in the general direction, the module can be adjusted on its bracket and pointed to the effected area for best results. To avoid rain water from gathering in the speaker housing and causing possible damage, pointing the module upwards should always be avoided with vertical adjustment not exceeding 10 degrees above horizontal. If mounting in warehouse, remember that girders and pillars will block the sound, so it is better to have no obstructions directly in front of the unit.

        Sentinel 1 way ultrasonic cat bird pigeon fox badger repeller deterrent rear                           Sentinel 4 way ultrasonic cat bird pigeon fox badger repeller deterrent mounting bracket 2

Please pay attention to the fact that ultrasonic sounds travel in straight lines (similar to that of torch light). Therefore the module should be positioned in such a way that the loudspeaker points directly at the area to be protected. Obstacles (e.g. cupboards, shelves, fences, trees and hedges) cast “shadows”, the ultrasonic sound behind these obstacles is considerably weaker, so line of sight is always the best option. The frequency can be adjusted by using the controller on the base of the casing. To change the position of the controller use a small screwdriver and twist the protruding adjustment screw carefully.

Adjusting the frequency.

If the controller is turned anti clockwise, the sound frequency will get lower all the way down to approx. 8.000 Hz and audible for human beings. The more you turn the adjustment screw in a clockwise direction the higher the sound frequency and from a certain point on, no longer audible for human beings. Every species of animal reacts differently to specific frequencies and this will have to be tested accordingly for best results.

          Sentinel 4 way ultrasonic cat bird pigeon fox badger repeller deterrent control panel base2

Underside of the unit

For better results we recommend not to operate this ultrasonic device permanently but only to have it switched on during the hours that are of the most concern or to operate the device through a plugin timer set for the active periods.

The operating voltage of 12V d.c. voltage is supplied by the plug-in power supply and no other mains adaptor should be used. Every module has been tested carefully before dispatch, so if there are any concerns regarding installation or functionality please contact us for advice.

Sentinel 4 way ultrasonic cat bird pigeon fox badger repeller deterrent control panel base

The pest are not going away: Ultrasonic sounds do present a strong annoyance for animals but it can occur in some circumstances that ultrasonic sound won’t repel animals. This may happen for the following reasons:

  • 1) The animals have to take care of their young offspring close to the ultrasonic repeller and they will not leave them despite the annoyance.
  • 2) There is a shortage of food in the area and it can only be found close to the ultrasonic repeller
  • 3) Adaptation to ultrasonic sounds. Some electronic appliances do also release ultrasonic sounds from high voltage transformers etc and animals may get used to them.
  • 4) If wild animals have left their scent marks in the area, then these animals will want to defend their territory and ultrasonic sounds may not have an immediate effect on them. In this case please clean the area where the animals have left their scent marks.

Technical data:

Operating voltage: 12VDC

Current consumption: < approx. 60 mA Adjustable frequency: approx. 8…40 kHz (± 15 %) Frequency deviation, approx. 2 x per second: approx. 2…3 kHz (automatic change of frequency, siren-like) Sound pressure: max. 100 dB ± 15 % Range: > 50 m with free field of vision

Loudspeaker’s beam angle: max. 140 degrees.

Functional display: Power LED

Connection: via supplied plug-in adaptor (INDOOR USE ONLY)

Dimensions: approx. 72 x 50 x 31 mm (without mounting bracket)

 

Best Pest Control

Hearing frequencies of Cats, Dogs and other animals

Hearing frequencies of various animals from around the planet. This can be useful information if you are checking if an Ultrasonic Animal Repeller will work successfully with your particular problem pest.

Species

Approximate Range (Hz) 
human

64-23,000  

dog 67-45,000
cat 45-64,000
cow 23-35,000
horse 55-33,500
sheep 100-30,000
rabbit 360-42,000
rat 200-76,000
mouse 1,000-91,000
gerbil 100-60,000
guinea pig 54-50,000
hedgehog 250-45,000
raccoon 100-40,000
ferret 16-44,000
chinchilla 90-22,800
bat 2,000-110,000
beluga whale 1,000-123,000
elephant 16-12,000
porpoise 75-150,000
goldfish 20-3,000
catfish 50-4,000
tuna 50-1,100
bullfrog 100-3,000
tree frog 50-4,000
canary 250-8,000
parakeet 200-8,500
cockatiel 250-8,000
owl 200-12,000
chicken 125-2,000