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:

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.

Estlonda founded in 2003, its predecessor was Longhua Estlonda Electronics Factory in Baoan District, Shenzhen. It’s a national high-tech enterprise which is engaged in the research and development, production and sales of wireless communication equipment. We are also the strategic partner in the field of 5G private network and 5G multi-functional smart pole wireless communication for State Information Center (National E-Government External Network Management Center). Also as a certified enterprise by the Ministry of Industry and Information Technology and the National Radio Commission, and the vice president company of Guangdong High-Tech Industry Chamber, Emergency Governance Society of Shenzhen and Shenzhen Smart Street Light Association.

We are mainly focused on the R&D and manufacturing of 5G mobile phone signal jammers, 5G base station, 5G gateways, 5G core network, 5G private network, 5G public network blind filling and other communication equipment, as well as a 5G multifunctional smart pole solution provider. As the first and largest manufacturer in China to produce mobile phone signal jammers, we are with a market share more than 80%. The Chinese headquarters is located in Longhua District, Shenzhen, and the foreign headquarters is in Hannover, Germany. There are two R&D centers in Nanshan, Shenzhen and Nanjing, Jiangsu. Our R&D team is mainly composed of outstanding R&D personnel in communications from Silicon Valley in the United States and major semiconductor universities in Belgium.

With 5G technology and product research and development as the core, and relies on the 5G+ multifunctional smart pole industry foundation to build smart cities, smart campuses, smart parks, smart scenic spots, smart emergency, smart roads, smart ports, smart mines, smart ports, smart factories, smart terminals, and etc., we provide research and development, production of 5G core network, 5G base station, 5G gateway and other private network communication equipment, and 5G global private network solutions, provide 5G private network services for digital factories, digital parks, digital governments, and digital China, to solve the communication and interconnection problems in various places without communication methods and network signals.

As a leading wireless communication equipment manufacturer and solution provider, our products and solutions have been widely used in schools, prisons, troops, conferences, confidentiality, enterprises, finance, electricity, coal mines, public security, hospitals, ports, government agencies, transportation systems and other fields, in the same track with Huawei and ZTE. It has participated in the formulation of national standards many times, obtained a number of patents and soft works, and has passed the ISO9001 international quality management system. It is a qualified supplier of China Mobile Communications.

In addition to in-depth cooperation with China's four major carriers, central enterprises, and state-owned enterprises, we also participates in the testing and construction of 5G public networks of telecom operators in Hong Kong Telecom, Brunei, Palau, Southeast Asia and other countries. In the future, we will also cooperate with partners to participate in overseas operators testing and construction of 5G communication network.