Additional external ultrasonic speaker for BugHunter BDA-3

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$107.00 - $160.00 / Pieces | 1 Piece/Pieces (Min. Order)
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Quick Details
Place of Origin:
Russian Federation
Brand Name:
i4 Technology
Supply Ability
Supply Ability:
200 Piece/Pieces per Month
Packaging & Delivery
Packaging Details
Cardboard box
Product Description

External ultrasonic speaker for microphone suppresor "BugHunter DAudio bda-3 Voices". Being used together with the device it lets organize a more effective system which protects your conversations from recording by directing sources of ultrasound from different directions. The speaker is equipped with 4 ultrasonic transducers and connects to device via mini-jack 3,5 mm port, up to two speakers can be connected to one suppresor by using a splitter. Device is powered from 110/220V power source via an adaptor (included).

Super-effective ultrasonic suppresion system "BugHunter BDA-3 " with additional ultrasonic speakers

If you already have a microphone suppresor "BugHunter DAudio bda-3 Voices" or you plan on getting one, we recommend to add one or two ultrasonic speakers to it. By paying a little extra, you will be able to protect your meeting room from spyware more reliably. By itself the suppresor offers protection directly in front of you and additional speakers generate interference from other sides. In this case ultrasonic interference becomes denser and more effective at suppresing spyware.

Using additional ultrasonic speakers is more economical in cost than using two or three "BugHunter DAudio bda-3 Voices" suppresors and a lot more efficient than buying expensive suppresors with a large number of transducers pointed in one direction. You need to consider that with every meter distance, power of ultrasonic interference decreases by 2-3 times, that's why bulky analogues with "50 unidirectional transducers" won't create the result you expect. All these are not allegations but facts verified by experiments.

On the front side of the speaker 4 ultrasonic transducers are placed and audio connector and a power adapter jack are located on the back.

How to correctly place ultrasonic speakers.

Depending on the size of your room and location of people you are talking to, you might require one or two additional ultrasonic speakers. We suggest only some of the possible layouts on the base of which you can determine what places work best in your case.

If you have only one speaker place it under the table. Or point the side with transducers towards the other person while the suppresor itself will be lying on the table in front of you. When using two speakers, usually one speaker is placed under the table and other one is placed on the wall or shelf.

Operating principle

Device generates ultrasonic signal through transducers. Frequency is determined by a micro-controller and variates according to a specially developed algorithm. Ultrasonic signal affects recording paths of spyware which results in them fixating only indiscriminate noise in which conversation can't be distinguished.

Detailed Images
Packing & Delivery

Package contents

- Additional ultrasonic speaker for "BugHunter DAudio BDA-3 Voices" microphone suppresor;
- Power adapter for 110/220 V power supply;
- Individual packaging.

Our Company


Our company has been inventing, developing and
manufacturing innovative electronic devices since 1995.
At the time we created an independent subdivision for
development and production of complex electronic systems on the basis of a military facility.
In 20 years of hard work we have come a long way from
contract manufacturing to our own brand of electronics.
Today we have production facilities in the cities of Izhevsk and Arzamas, and research centers in Nizhniy Novgorod
and Izhevsk where we successfully combine genius minds
and current technology.
In 2008 our products gained high popularity which
resulted in a strong constant demand. We are convinced that our strategy appeals well to our clients and customers
and we will continue living by it: "Production quality, durable devices which conform to declared characteristics".
We don't chase low prices of Chinese products, but we are
ready to stand behind the quality, functionality and
reliability of our products.
And we are second to none at this!
All our products come with 12 months warranty.


If you are not 100% satisfied with your purchase, you can return
the product for a refund or exchange it.
You can return a product for up to 30 days from the purchase
date, with return shipping covered only if the item is defective
or not as described. Any product you return must be in the
same condition you received it and in the original packaging.
Refunds are processed after the returned product is received
and inspected.
If the product arrives in damaged packaging, we recommend
filming the opening process.


We accept payment by PayPal, bank transfer and Western Union

Please pay as soon as possible after winning an auction, as that
will allow us to post your item to you sooner!


This item is shipped by EMS Express from Russia within 1-2
buisness days.

Delivery time varies between 7-20 days depending on the
geographical region.

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