NEWS DIGEST 2023 Part 2 Protection Equipment

NEWS DIGEST 2023 part 2 Protection equipment

Up today for Your review we would like to offer, following classes of protection equipment:

- Ultrasonic Jammers

- Protection boxes 

- Acoustic Safes 

- Mains Protection 

Please see list of equipment we are going to review, below: 



SEL 08





DNG Kit 1 



PROSAFE Standard and Portable

S1,S2,S6 protection Box

No Spy SEL Box 

As a separate class of protection equipment we would like to undersline Ultrasonic Microphones Jammers. 

The principle of operaton of an ultrasonic microphones jammer is based on the emission of ultralow frequency signals that affect the microphones and are inaudible to the human ear. 

Please see picture below: 

Up today, we offer a wide variety of Ultrasonic jammers. 


SEL ULTRA MAX is a unique and effective ultrasonic device used to protect classified information, based on special algorithm of generating of the digital ultrasonic jamming signal. Device effectively protects confidential conversations, conferences, business conferences and secret meetings against eavesdropping and recording with any voice recorders.
SEL ULTRA MAX is characterized by solid construction and simplicity of use. The briefcase is not opened, and the access code is only a visual addition. It is a device dedicated to businessmen who care about the discretion of any conversations or business negotiations.

SEL ULTRA on the other hand has less ultrasonic emitters, but has a bigger battery installed in the device. Making its advantage in being a more portalbe device. 



SEL OMNI TOWER is a unique and effective omnidirectional ultrasonic device used to protect classified information, based on special algorithm of generating of the digital ultrasonic jamming signal. Device effectively protects confidential conversations, conferences, business conferences and secret meetings against eavesdropping and recording with any voice recorders.
SEL OMNI TOWER effectively blocks wiretaps, voice recording and microphones in rooms about the area about 30-40 m2 such as:
• microphones in cell phones;
• digital recorders of the sound with the built-in microphone or the microphone on the cable;
• professional digital dictaphones of the type : EDIC-the mini, Gnome, Olympus, Papyrus...;
• dictaphones built-in in Smartphones of the type the Iphone, HTC, SONY , LG, SAMSUNG...;
• radio microphones, microphones of recorders audio-the video;
• microphones of cameras, bugging microphones;
• professional dictaphones hidden in cards to ATMs;
• older and newer dictaphones, recorders in the metal-housing.

SEL OMNI TOWER Mini a smaller version fo the device SEL OMNI TOWER, designed for better consealment while set on the table in the controlled premise. 

SEL 08

SEL 08 is a small size portable microphone jammer for jamming cell phones, audio recorders for personal use that helps protect confidential audio information during conversations in indoor meetings, outdoors or inside the car. It can be easily and quickly installed inside a car, on or under a conference room table, or built into a briefcase or purse. Despite its small size, SEL 08 is a highly effective jamming device, producing a complex jamming signal in the ultrasonic band above the point of human hearing.


SEL PANEL ULTRA MAX - Stationary Jammer of Microphones and Audio Recorders

SEL PANEL ULTRA MAX is a unique and effective ultrasonic device used to protect classified information, based on special algorithm of generating of the digital ultrasonic jamming signal. Device effectively protects confidential conversations, conferences, business conferences and secret meetings against eavesdropping and recording with any voice recorders.

Panel can be placed on a desk or hung on the wall. It is a device dedicated to business people who care about the discretion of any conversations or business negotiations in offices or conference rooms.

20MJ20 - Portable Microphones Jammer

The 20MJ20 is a highly effective ultrasonic jammer. It is designed to protect confidential information during meetings and conversations. It generates a unique ultrasound signal that blocks the microphones within the range of the device without interfering in the conversation. When turned on, the jammer virtually blocks the operation of any device with microphone and which are designed to record or transmit an audio signal. Such devices are: Mobile phones, dictaphones, audio recorders, wired and radio microphones used for eavesdropping, video and audio conferencing systems, GSM microphones, etc.

In order to improve the efficiency of the device, there are several unique solutions:
1. Generating a special signal covering a wide frequency range and affecting different types of microphones.
2. Operation on two different frequencies in order to increase the distance of impact and overcome possible measures to counteract the jammer.
3. Ability to operate several devices in a room without going into antiphase, which would lead to periods of reduction or cessation of the jammer’s effectiveness.
4. Control of up to 4 devices with one remote. The Ultrasound jammer is a set of two separate jammers that could work individually (separately) or synchronously. One of the jammers works at 25 KHz and the other at 33 KHz. Several jammers operating at 25 KHz only (respectively at 33 KHz) can be used simultaneously.

SEL SUMMIT is a stationary ultrasonic protection device.


Obviously mobile phones have an infinite number of benefits for communication and business; however, they also create certain threats of information leakage. One of the potential leakage channels is the phone's microphone being able to pick up surrounding acoustics with a high sensitivity. The SEL SUMMIT has been developed by information security professionals to protect against this exact type of threat. SEL SUMMIT is a small size portable microphone jammer to protect confidential speech information during conversations.


• Blocks the microphone of the phone with the help of non-filterable ultrasonic interference
• Efficiently prevents surround recording apps from capturing conversations and sounds
• Suppresses both the bottom and upper microphones of the phone by creating two-side interference
• Up to 4 phones can fit inside
• Inaudible frequency of interference has been optimally selected for the best performance and affects all existing models of smartphones
• Made with the design of an attractive natural wood stand
• The acoustically isolated phone can remain close to the owner where the screen can be easily observed
• The phone stays online and available for incoming calls
• No illegal radio jamming
• Can be powered by the external USB, or from the built-in rechargeable battery
• Has 2 sensors, increasing the battery’s resource: the device starts producing interference when a phone is inserted (IN USE sensor) and a conversation is present (ACTIVE sensor)
• Is compatible with all types of phones (max. height 180 mm)


Is a modification for a single phone at the desk of the protected area. 

Technical capabilties of jamming are similar to the SEL SUMMIT


Next class of devices that we are reviewing in this publication is Vibro Acoustic protection systems. 

DNG Kit-1

 It is well-known that sound permeates through walls, doors, water, windows and other constructions as well as through voids, cavities and ventilation shafts. This property of materials makes it possible to intercept conversations conducted within a premises with the help of highly sensitive contact microphones (electronic stethoscopes), window laser systems or conventional microphones without entering the target area.

Wall contact microphones can pick up vibrations from the plumbing, structures, walls, windows, doors, floors, ceilings and more. The listening device may be in an adjacent room, or even several floors or rooms away attached to a wall, pipe or other fixture. Cavities such as air ducts, ventilation shafts or other voids can be used for intercepting sound from an adjacent premises with a help of conventional microphones.
Window laser systems are able to "read" conversations from the premises by sending visible, or invisible, infrared beams to the glass and extracting the sound vibrations from the reflected rays.
The DNG-2300 generator, together with its transducers and speakers, counteracts all the above mentioned methods of listening by creating powerful, non-filterable interference on the structure of a building and within its voids. While transducers inject their generated noise into surfaces and structures, stopping the distribution of sound through them, the role of a speaker is to fill voids, cavities and ventilation shafts with audio interference to prevent leakage of sound through the air.
-Creates powerful protection against the leakage of all types of vibro-acoustics by injecting non-filterable noise into surrounding structures and cavities
-Suppresses wall contact microphones, window laser systems and wired microphones inside walls, voids and ventilation shafts (air ducts)
-Is a key part of the protection system which also includes wire-connected transducers and speakers
-Generates white noise – the output interference is evenly distributed through the spectrum of a human's voice
-All 3 channels have individual level adjustment
-Each TRANSDUCERS channel can feed up to 12 transducers mounted on solid structures (concrete/cement/bricks) and up to 24 transducers on light structures (glass, pipes, drywall, wood)
-The SPEAKERS channel can feed up to 12 speakers
-The MUTE control input allows the user to turn off the speakers temporarily.

DRUID D-06 on the other had is a portable speech protection system.


op-of-the-line protection system. This is the only device in the world which can give 100% protection to your conversations against interception or recording. The DRUID D-06 creates powerful interference against all kinds of listening devices! Even if a person is standing next to the participants, they will not be able to understand what is being said. The headsets allow the users to hear each other clearly while the DRUID's central unit produces interference. Powered from 220V or the internal rechargeable battery with a resource time of 3—6 hours. The unit is supplied in a carry case.
Not all listening devices can be detected by existing methods. The DRUID D-06 is a unique system for providing protection of human's speech.
Remotely controlled radio microphones, wired microphones, passive resonators, miniature voice recorders practically all these devices cannot be detected by conventional methods. Even a modern cellular phone may contain a digitalvoice recorder; this means that any phone lying on the desktop could be used by an adversary to record a conversation. 
Therefore it is extremely important to have a reliable device protecting private conversations, not depending on their level of importance. The concept of the DRUID is based on generating audio interference produced simultaneously with a human's speech. The volume of this interference is higher than a person's voice; therefore neither listening device nor recorder is able to pick it up.
The generated audio interference cannot be cleared by any noise-clearancemethods. At the same time the produced interference does not create any inconvenience to the participants of the negotiation thanks to the special headsets. The DRUID headset allows users to hear each other with crystal clear quality.


MNG-06 is a small, compact, highly efficient and multifunctional noise generator, which aims to neutralize eavesdropping and hidden audio recorders, as well as to help detecting such.

The device generates several types of sounds, each of which is used for different TSCM activities:
iWhite noise- 2 types
Purpose: 1. To block the mics and ensuring confidentiality of the conversations/ meetings. Frequency-optimized white noise generated by the Acoustic safe covers all frequencies of the human voice.
iSpeech like noise- 2 types
1. To block the mics and ensuring confidentiality of the conversations/ Speech like noise generated by the Acoustic safe covers all frequencies of the human voice.
2. Evaluation the sound permeability through various barriers and protections.
iMetronome- generates sharp rhythmic sound with different octaves- 2 types
The use of the Metronome sound mode is recommended together with TSCM devices that in addition to the spectrum analyzer have also oscilloscope- it monitors the similarity between the metronome clicking sound and the oscillation of the oscilloscope graph. 
1. To evaluate the sound permeability through various barriers and protections.
2. To activate VOX (voice activated) microphones.
3. To assess the relevance of intercepted radio signal to the sounds it the inspected room.
iOctave (rhythmic) sound with different sound frequencies- 1 type
1. To assess the permeability of sound through different barriers (walls, pipes, air ducts, etc.) and protections. When the lid is open and the Acoustic safe is switched on and set to sound Octave mode, it could be checked with different microphones or to be heard without any special equipment (naked ear) if the different sounds (frequency ranges) pass through the barriers or through the wiring installation or air ducts, pipes, windows, etc.
2. Search hidden activate VOX (voice activated) microphones. Using Octave sound mode activates the VOX microphones because it creates sounds in a wide frequency range. In addition, the sound is easily recognizable at possible detecting and hearing the sound from a radio microphone.
If required up to 6 external piezoelements (transducers) can be connected. Piezoelectic elements are normally stuck on the window glass or installed on the room wall, pipes or air ducts. Very efficient transfer of audio frequency noise vibrations ensures much higher noise on the target surface then any vibrations produced by conversation in a room.

Next set of devices that we are going to review is protection boxes. Designed for protection of speech informaton against unauthorized activation and further eavesdropping. 

PROSAFE Standard and Portable

The purpose of the acoustic safe is to block the audio access of mobile phones/recorders/dictaphones, etc. (devices with microphone) during meetings, conferences, confidential conversations or situations where it is important to take precaution against eavesdropping via recording devices. Smaller, but technically the same Mini model is available. 

The Acoustic safe generates several types of noises/ sounds: White noise, Speech like noise, Metronome, Rhythmic sound.

Easy to use: Just put the device (mobile phone) in the Acoustic safe, switch the Acoustic safe on (adjust the sound level and sound type) and close the lid. The devices in the box don’t have audio and video access to the conversation and it is not possible to record it. In the same time you can hear if someone calls you and decide whether to accept the call or not. Thus you don’t have to leave the mobile phones outside the room, switch them off or remove the batteries.

S1,S2,S6 Protection BOX 

Device protecting confidentiality, anti-interception against industrial espionage. 
Espionage and abusive interceptions represent a serious issue for all organizations: private, public as well as for any subject dealing with confidential, private and / or sensitive files in a given domain, in “Real Privacy” mode.
An example:
In business: more than 87% of data and information loss-dissemination occurs through internal help / complicity.
The most serious fact is that the victims / targets are intercepted and listened to during their confidential interviews, by “infection” of their computer tool, for approximately 50-60% of cases and by virus, on their Smartphone, in 90% of cases.
The International and National chronicle tells us these days, once again, what is going on behind the backs of individuals, often powerful and rich, even extremely wealthy; systematically “listened” and “intercetpted” with total violation of thier secrets, habits, privacy.
The risk is generated by the “concept” of total reliability that we have all attributed to a tool, now “life companion”, 24h, 365 days / year. The number of functions of the former mobile phone is evident today, as are the many applications that are used for professional purposes or to play, on all available platforms.
Indeed, we do not know how each works; in addition, guaranteed low-cost connectivity, ever-increasing computing potential, and immense (expandable) storage capacities of the Smartphone makes it the main risk factor for people to become the main instrument of espionage actions which can be used against them.
Protection Box - a simple, innocent, tool with high technological content. Developed to protect all the sensitive conversations we “produce” on a daily basis. During meetings, at the office, at the hotel, in the car, at work, with clients, colleagues, associates, alone in smartworking … Confidentiality is guaranteed, by simply inserting the participants’ smartphones into their security box, which is active and operational. The constant emission of artificial interference imperceptible from the outside blocks any attempt of espionage. A new way to manage your meetings, to deal with sensitive subjects, in total confidentiality, security and freedom!
• An elegant small-sized box in precious wood, suitable for any smartphone model (cm 13 x 22 x 5).
• Comfortably at hand
• Internal black velvet case to hold the Smartphone
• Possibility on request to personalize the box with the name of the owner written by hand
• Long battery life, up to 20 days
• Fast charging via USB port. With 2 hours of recharge, can operate up to 96 consecutive hours
It can be placed on the desk or stored in its briefcase
• INSERT the Smartphone inside Protection Box
• CLOSE the box and wait for the blue light to come on
• START TALKING! Now no one will be able to listen via phone hacking. Protection Box will guarantee total confidentiality

SIM CARD EXTRACTION: Any smartphone, hacked or infected, even without its SIM card, is however able to record any environmental data and transmit audio files as soon as the SIM card is reinstalled; or the phone re-connected to the web.
SMARTPHONE OFF: If the Smartphone is hacked, the hidden Admin can install the environmental audio recording even if it is turned off, by sending files as soon as they are turned on again, under optimal data connectivity conditions.
To dispel your last doubts, it is recognized today that certain multinational communication companies or others, have adopted systems of PERMANENT LISTENING of the user, independently of his will or request.
FARADAY BOXES, SECURITY BAGS: Disconnect the Smartphone from the network but NOT ITS MICS. The hacker can also install the audio recording remotely, before the phone is inserted into the “sec-bag”. In addition, unlike Protection Box which keeps your telephone intact, this system leads to the loss of its functions for receiving calls, emails and messages and, in the event of an emergency, you can no longer be reached.
LIVE LISTENING FUNCTION: Apple Smartphones have the “Live Listening” function, for listening to what is happening in an environment, through the use of AIRPODS or POWERBEAT. Protection Box hinders this opportunity for environmental listening.






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Phone: +370 655 08288, +370 655 08286
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