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Stationary 270° Hidden Adjustable High-Power Ultrasonic Audio Recording Shielding System

Place of Origin CHINA
Brand Name EST
Certification CE&ROHS
Model Number 60NK-270N
Minimum Order Quantity 1PC
Packaging Details neutral packing
Delivery Time 1-3 working days
Payment Terms 100% before shipment, Western Union, T/T
Supply Ability 500pcs/week/C

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Product Details
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mobile phone signal detector


cell phone signal scanner

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Product Description


Stationary 270° Hidden Adjustable High-Power Ultrasonic Audio Recording Shielding System


60NK-270N ultrasonic audio recording shielding system is a new type of recording shielding system developed by our R&D team in combination with our existing products and customer needs. Its appearance is as air purifier, which is beautiful, simple and generous, and can help hidden in the meeting room successfully, but via its 60pcs ultrasonic transducers in total 270° shielding angle (each side 90-150°, 3 sides in 270°, except the speaker side) to reach the shielding illegal recording in a high performance at the same time, which is suitable to use meeting rooms, leader’s office, and etc.


The software of each jammer main unit adopts a silent encryption algorithm based on identification, which ensures that the recording file can not be deciphered and decomposed. This algorithm is widely used in mobile phone data encryption and is extremely secure. Self adaptive mute technology is adopted to ensure the invisibility and security of visitors without any discomfort after turning on.


60NK-270N has a good shielding effect on the latest mainstream mobile phones on the market, such as MATE20, P20pro, and iPhone X/XR/XS/XS MAX series.


Product Features:

1. With 60pcs ultrasonic transducers, 270 degree, nearly no dead shielding angle for recording (except the speaker side).

2. Greater output interference signal power to reach stronger noise signal picked up by recording equipment.

3. Better shielding performance with 1-3m for good recording equipment, while 2-5m for other weaker recording equipment like Android mobile phones.

4. Output effective power up to 98%, based on Huawei, Xiaomi, iPhone, OPPO, vivo, recording pen, etc.

5. Flexible operation, remote control can be used to open and close multiple sets of mainframes at the same time.

6. 3 knob buttons to adjust the shielding radius separately for each side.

7. Adaptive silencing technology ensures quietness in use.

8. Its appearance same as air purifier, to help reach best concealment.


Technical Data:

Shielding Objects mobile phones, recording pens and other sound acquisition devices
Function conveniently & effectively & quietly shield audio recording devices
Shielding Distance

1-5 meters

(also depends on mic sensitivity and ultrasonic signal strength)

Shielding Angle 270° (except the speaker side)

Ultrasonic Transducers

(Transmitting Terminal)

Switch Method remote control
Power Adjustment Method knob adjustment
Product Size 16*16*28.5cm
Product Weight 2.4kg
Working Temperature -40℃~55℃
Relative Humidity 35~85%
Power Consumption 120W
Input AC 100V~240V
Output DC 12V / 12.5A
Accessories 1pc jammer, 1pc power adapter(with AC plug), 1pc remote control, 1pc PP suitcase



Applicable Places:

1. Flexible use scenarios such as conference room, office, court, reception room, confidential meeting, car meeting, private meeting, high-level meeting, business negotiation, leisure club, party, etc.

2. Leadership office, combat command centers, and other places to prevent illegal recording.