A recording shielder is a technical device that emits specific sound waves to interfere with the operation of recording equipment. It is mainly used in scenarios such as meetings, business negotiations, and private conversations where it is necessary to prevent sound from being illegally collected. The core principle of this device is to generate interference signals that overlap with the frequency band of the original sound, so that the recording equipment cannot clearly record the valid content, and it is impossible to restore it through technical means later. Such devices usually do not rely on software systems but directly emit interference waves in a hardware form, featuring simple operation and ready-to-use characteristics.
First, technical principle and core design
The working principle of the recording shielder is based on acoustic wave interference technology. The device is equipped with multiple transmitting terminals, which generate a composite interference signal through the mixing of high and low frequency audio sources, covering the frequency band where human voices can be recorded. The transmission angle can reach 240-300 degrees, forming a fan-shaped interference area, effectively shielding the recording functions of devices such as mobile phones and voice recorders within a range of 2-5 meters. The device is controlled by a knob remote control, allowing users to turn it on using the remote control, and adjust the transmission intensity with the knob to meet the needs of different space sizes. After the interference signal is emitted, the audio recorded by the recording device will be mixed with a large amount of random noise, making the voice content impossible to be recognized.
Second, adapt to the usage methods and scenarios
The equipment operation does not require complex settings. After connecting the power supply, it can be started by using the remote control. Its appearance design is in the style of an air purifier, with strong concealment, and can naturally blend into meeting tables, office desks and other environments. The applicable temperature range is from -40℃ to 55℃, and the humidity is 35%-85%. It can adapt to extreme climate conditions. The power input is AC100V-240V wide-voltage design, with an output of DC12V/12.5A, a power consumption of 120W, and is packaged in a PP protective box for easy carrying and transportation. Typical usage scenarios include confidential enterprise meetings, government classified conversations, legal consultations, medical consultations, etc., where recording leakage needs to be prevented.
Third, Performance Characteristics and Technical Advantages
Compared with traditional shielding devices, this product has achieved three major improvements through a complete upgrade: Firstly, the shielding effect is stronger. Due to the improvement in the layout of the signal transmission terminals, multiple channels of signals are superimposed, resulting in a higher peak intensity of the shielded signal. Secondly, the shielding distance is longer. It can reach 5 meters in an open environment and performs even better in enclosed spaces. Thirdly, the coverage area is wider. For current mainstream recording devices, its coverage rate can exceed 95%, especially for Apple series mobile phones. The device supports the latest iPhone and its performance is far superior to similar products on the market. Fourthly, it has more functions. This device also has functions such as air purification, ultraviolet disinfection, and negative ion purification.
Fourth, Security and Compliance Statement
The use of the recording shielder must comply with legal regulations. It is prohibited to use it in unauthorized public places or in the private spaces of others. The device only interferes with the recording function and does not affect normal communication such as phone calls or wireless networks. It also does not have any impact on human health. The interference range is strictly controlled within a 240-300 degree sector in front of the device to avoid causing false interference to surrounding non-target devices.
We are a Chinese manufacturer specializing in custom-made recording shielder. If you have any requirements, please contact us at info@alasartech-security.com.
