Protect private conversations from unauthorized smartphone recording
Your smartphone is designed to listen. It contains multiple microphones, sophisticated audio processing and applications that can record conversations — sometimes without the people around the phone realizing it.
For confidential meetings, sensitive business discussions and private conversations, simply asking participants not to record may not be enough.
The CryptSec AJB-331 Cellphone Audio Jammer Box provides a practical technical layer of protection by interfering with the smartphone’s microphone while the phone is placed on the device.
Using advanced ultrasonic mixing technology, the AJB-331 is designed to disrupt audio recording without producing the loud, distracting noise associated with traditional audio jammers.
One phone. One conversation. One additional layer of privacy.
The AJB-331 is designed for situations where one smartphone needs to be protected from audio recording.
Place the phone on the designated area of the device and the anti-recording function activates. The system is designed to interfere with the microphone while leaving normal cellular communication and network connectivity unaffected.
This makes the AJB-331 particularly suitable for professional environments where you want to protect the conversation without disconnecting the phone from the outside world.
Why protect your conversations?
Sensitive information is discussed every day in places where smartphones are present.
A conversation might involve:
- Business strategies and negotiations
- Financial information
- Intellectual property
- Product development
- Legal discussions
- Client information
- Executive decision-making
- Investment strategies
- Security-related information
- Personal and family matters
- Confidential negotiations
A smartphone can potentially turn an ordinary meeting into a recording opportunity.
The CryptSec AJB-331 is designed to give you an additional layer of control over this risk.
Designed for everyone who values privacy
Privacy protection is not exclusively a government or corporate requirement.
The AJB-331 can be useful for private individuals, professionals, companies, organizations and public-sector institutions whenever conversations need an additional level of protection against smartphone-based audio recording.
Businesses & corporate offices
Protect sensitive discussions involving business strategy, negotiations, management decisions, financial information, intellectual property and other commercially confidential matters.
Executives & management
Executive meetings can involve information that should not be casually recorded or distributed. Keep the AJB-331 available in boardrooms, executive offices or meeting spaces.
Lawyers & legal professionals
Legal discussions often involve confidential client information and sensitive case material. The AJB-331 can be used as part of a broader physical privacy procedure during appropriate meetings.
R&D and innovation teams
New products, technologies, designs and ideas can have significant commercial value before they are publicly announced. Use the AJB-331 as an additional technical measure during sensitive development discussions.
Financial professionals
Investment strategies, financial information and confidential client discussions require careful handling. The AJB-331 can provide an additional layer of protection during sensitive conversations.
Government & public-sector organizations
Public institutions and government agencies may routinely handle information that requires controlled communication environments. The AJB-331 can form part of an organization’s broader information-security and meeting-room procedures.
Private individuals & home offices
Privacy matters at home too. Personal, financial, family and professional conversations can all benefit from additional protection when smartphones are nearby.
Ultrasonic technology — protection without disruptive noise
Traditional audio jammers may use audible noise to make recordings unusable. This can be distracting and uncomfortable for everyone in the room.
The AJB-331 takes a different approach.
Its ultrasonic mixing technology operates outside the normal range of human hearing while targeting the smartphone’s microphone. According to the manufacturer’s specifications, the technology is designed to interfere with the microphone without producing audible noise or electromagnetic radiation.
This allows the conversation to continue normally while the phone is being protected.
Your phone stays connected
The AJB-331 is designed specifically to interfere with the phone’s microphone, rather than blocking cellular or wireless network communications.
That means the device does not function as a conventional cellular signal jammer.
According to the manufacturer’s specifications, calls, SMS and other network communications are not intentionally blocked by the device.
This distinction makes the AJB-331 particularly practical for meetings where the smartphone still needs to remain operational for communication.
Wireless charging built in
The AJB-331 isn’t simply a security device.
It also provides up to 10W wireless charging, allowing compatible smartphones to charge while positioned on the unit. This makes it convenient for use on desks, in meeting rooms and in offices where the device may remain available throughout the day.
Simple to use
The AJB-331 is designed for straightforward everyday operation.
1. Connect the device to power
The AJB-331 operates from an external power supply.
2. Place the smartphone on the designated area
Position the phone correctly on the device.
3. Confirm operation
The LED indicators show the operating and charging status.
4. Continue your conversation
The ultrasonic anti-recording function operates while the phone is positioned on the unit.
No complicated configuration or technical expertise is required.
Designed for modern smartphones
The AJB-331 features an internal/protective area measuring approximately 173 × 86 mm, designed to accommodate large modern smartphones.
The manufacturer’s published compatibility information includes flagship devices from Apple, Samsung, Google, Huawei and Xiaomi.
Compact enough for everyday use
The AJB-331 is designed to fit naturally into professional environments without taking up unnecessary desk space.
Its compact dimensions make it suitable for:
- Executive desks
- Meeting rooms
- Boardrooms
- Legal offices
- Home offices
- Private studies
- Conference tables
- Temporary meeting locations
With a weight of approximately 219 grams, it can also be moved easily between locations.
Key benefits
- Designed to protect one smartphone from audio recording
- Ultrasonic microphone-interference technology
- Designed for iPhone and Android smartphones
- No audible jamming noise
- No intentional cellular network blocking
- Calls and SMS remain available according to the manufacturer’s specifications
- Up to 10W wireless charging
- LED operating indicators
- Compact and discreet desktop design
- Simple plug-and-use operation
- Suitable for professional and personal environments
- Ideal for confidential meetings and conversations
Privacy is everyone’s responsibility
You don’t need to work for a government agency or a multinational corporation to have something worth protecting.
Every business has confidential information.
Every professional has sensitive conversations.
Every organization has information that should be handled carefully.
And every individual has conversations that deserve privacy.
The CryptSec AJB-331 provides a practical way to add another layer of protection against smartphone-based audio recording.
Keep one on the desk.
Use it during sensitive meetings.
Make it part of your privacy procedure.
When privacy matters, don’t leave it to chance.
CryptSec AJB-331 — Cellphone Audio Jammer Box
Compact. Discreet. Professional privacy protection for one smartphone.
