The Mosquito is essentially a sounder unit that emits a very high tone that is completely harmless even with long term use.
(The unit has been tested by NPL to ensure it complies with HSE report 343/2001)
What Does The Mosquito Do?
The system generates a pulsed near ultra-sonic tone at around 17 KHz, which is close to the limit of the hearing range of people under 25 years old. This sound whilst not painful in anyway, becomes highly annoying after 5-10 minutes exposure. The result is that the majority of under 25's leave the immediate area whilst the majority of those over the age of 30 because of natural age related hearing loss either only just hear or in most cases are totally unaware of the noise.
Set the system to 8 KHz to disperse people of ANY AGE from areas where loitering can be an issue such as subway terminals, car parks or any areas where people feel insecure at night due to other people loitering in the shadows etc.
The system is designed to be used for up to 20 minutes at a time. A timer is included with the unit. There is also a manual over-ride button that will switch the system on between programmed times if required, for a period of 20 minutes.
FAQ
I am not a teenager, will the Mosquito affect me?
This is very unlikely and research has shown that the majority of people over the age of 25, have lost the ability to hear at this frequency range. It should be borne in mind, however, that the unit usually has the desired effect – moving the crowds away – within just a few minutes, at which time the unit can be turned off. So even if you are able to hear the noise to some degree, you would not have to put up with it for long.
Although dogs have very acute hearing and are easily able to hear at this frequency, extensive testing shows that it does not appear to bother them.
How quickly does it work?
The longer someone is exposed to the sound, the more annoying it becomes. Field trials have shown that teenagers are acutely aware of the Mosquito and usually move away from the area within just a couple of minutes. The field trails also suggest that after several uses, the groups of children / teenagers tend not to loiter in the areas covered by the Mosquito, even when it is not turned on.
Wireless Intruder Alarm Systems - Staffordshire - Cheshire - Shropshire
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