AJB-332
Dual Phone Recording Blocker Box for Anti Eavesdropping
General Configuration
✔Jamming Method: Ultrasonic Mixing Technology
✔Safe & Senseless: No audible noise or electromagnetic radiation
✔100% Block Recording on All Android phone and iphones
✔Indicators: Jamming Active, Power On, Battery Power
✔Built-in Li battery for 8+ hours continuous working
✔Only block phone’s microphone, not block phone network communications
✔Capacity for 2 cellphone use simultaneously
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Description:
“ Total Privacy, Zero Disconnection.”
The AJB-332 redefines secure conversations by blocking microphones while keeping you online. This is a desktop ultrasonic dual phone recording blocker, featuring efficient jamming, simple operation and flexible deployment. By adopting our advanced ultrasonic mixing technology, it effectively prevents illegal eavesdropping via smartphones and recording apps. This audio jammer device only acoustically jams the microphone, without affecting the phone’s call, network or SMS. It ingeniously resolves the dual dilemma in high-end scenarios of “strictly preventing recording leaks while keeping communications online.”
The audio jamming phone box comes in a flip-cover lightweight structure with a built-in large-capacity battery, allowing immediate use without fixed installation. Its black edge design also effectively blocks cameras, eliminating the risk of surreptitious filming from the source. The AJB-332 is the ideal audio jammer for high-sensitivity scenarios such as business negotiations, confidential meetings, and legal communications.
What is the working principle?
Ultrasonic Jammer operates by emitting high-frequency ultrasonic sound waves to deceive the microphone, typically above the range of human hearing (20 kHz+). The microphone can only receive the harmonic ultrasonic signal generated by the jammer, and cannot pick up the normal voice signal. The recorded audio only plays noise, and cannot be analyzed using technical means (the noise completely covers the speech).
6 Features making AJB-332 Audio Jammer outstanding
Specifications:
| Parameters | Technical Specifications |
|---|---|
| Model | AJB-332 |
| Jamming Method | Ultrasonic Mixing Technology |
| Jamming Range | 100% Effective within the box |
| Capacity | 2 Slots |
| Power Supply | DC 12V3A(Type C) Adapter & Battery |
| Charging Time | ≤ 2.5 Hours |
| Battery Working Period | ≥ 8 Hours |
| Built-in Li Battery | 13000mah, 14.4V |
| Indicators | White(Battery), Blue (Jamming), Green(Power) |
| Working Temperature | -20℃~ 45℃ |
| Weight | 1.3 kg |
| Outer Dimension | 249.5mmx 199.5mmx 47 mm |
| Slot Dimension | 173mm x 86mm |
| Packing Box Size | 390mmx 270mmx 105 mm |
Typical Applications on AJB-332
High-End Business Negotiations
Ensuring trade secrets and pricing strategies are not "accidentally" recorded by the other party's phone.
Executive Offices & Reception Rooms
A standard desktop configuration for leaders when talking with subordinates or receiving important visitors.
Legal & Lawyer Communications
Protecting client privacy and ensuring absolute confidentiality of case details and legal strategy.
Private Clubs / Tea Rooms
Providing a temporary information security haven for VIPs in informal and relaxed settings.
Confidential Meeting Rooms
Serving as an intelligent upgrade solution for the centralized management of attendees' phones.
Portable Personal Protection
Serving as a portable "privacy shield" for high-profile individuals in hotels, vehicles, home, or public spaces.
The AJB-332 audio jammer box is suitable for all scenarios where you want to block cellphone positive recording or passive recording through eavesdropping apps. It is typically suitable for Government Officers, Politicians, High-End Company Leaders, VIPs, etc.
A Future-Ready Design
The design of the AJB-332 was fundamentally guided by the growing size trend of modern smartphones. We understand that professional security should not be compromised by device evolution. Therefore, the internal 2 slot of the AJB-332 (173mm x 86mm) has been meticulously engineered to provide ample and reliable protective space for the largest flagship smartphones on the market today and in the foreseeable future.
Mainstream Flagship Smartphone Compatibility List (As of September 2025)
To visually demonstrate the broad compatibility of the AJB-331, we have compiled a list of the latest and largest flagship models from major international brands currently on the market. As the table below indicates, all of these devices can be accommodated with ease.
| Brand | Model | Official Dimensions (L x W) | Compatibility |
|---|---|---|---|
| Apple | iPhone 17 Pro Max | 160.8mm x 78.1mm | ✅ Compatible |
| Samsung | Galaxy S25 Ultra | 162.3mm x 79mm | ✅ Compatible |
| Samsung | Galaxy Z Fold7 (Folded) | 155.1mm x 67.1mm | ✅ Compatible |
| Pixel 9 Pro | 162.7mm x 76.6mm | ✅ Compatible | |
| Huawei | Pura 80 Ultra | 162.6mm x 75.4mm | ✅ Compatible |
| Xiaomi | 15 Ultra | 161.4mm x 75.3mm | ✅ Compatible |
（Note: The phone dimensions listed above are based on public official data and are for reference only. Actual dimensions may vary slightly depending on the measurement method.）
How to use AJB-332 Dual Phone Recording Blocker Box
The AJB-332 is an ultrasonic audio jammer box designed to protect your private conversations from phone recordings. Using advanced ultrasonic mixing technology, it disrupts both built-in and third-party recording apps, rendering any captured audio as noise and can not be recovered. Compact and portable, the AJB-332 safeguards your privacy against eavesdropping in any setting—whether at work, during business meetings, or in personal conversations.
Usage Instructions:
-
Power On: Presss the merchanical button to power on. The Green indicator will light up.
-
Positioning: Place your phone into the box slot to activate anti-recording protection.
- Confirmation: A brief tone will sound when the jammer is active and functioning correctly.
| Function | Color |
|---|---|
| Power On Indicator | Green indicator lights up |
| Jamming Indicator | Blue indicator lights up |
| Batter Power Indicator | White Indicator lights up |
Demo Video of AJB-332 Dual Phone Recording Blocker Box
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