The SEL-151 Chasha-Lux acoustic safe is designed to protect speech information from remote eavesdropping via a secretly activated cell phone by acoustically jamming its microphone. The device is designed to protect one telephone.
When an unauthorized attempt is made to activate a telephone in remote information access mode for the purpose of listening to the surrounding environment, the level of electromagnetic field intensity near the telephone increases slightly. This increase is recorded by the electromagnetic field detector, which is part of the Chasha device.
After recording the fact of an increase in the electromagnetic field level, an acoustic noise interference generator is automatically turned on, the emitter of which is located in the immediate vicinity of the microphone of the cell phone. The level of acoustic noise at the input of the microphone of the telephone handset is such that it is guaranteed to provide noise jamming of the microphone of the cell phone. The same noise serves as a signal to the owner of the cell phone that his telephone is activated.
Distinctive features:
The detector of the "Bowl" device detects the inclusion of not only voice transmission channels of mobile phones, but also their operation in broadband data transmission modes. The acoustic interference generator of the device emits two types of signals: "white acoustic noise" and a pseudo-random signal of the "speech choir" type. The product is made of natural stone.
Technical specifications: Signals detected by the detector GSM, 3G, 4G, Wi-Fi, Bluetooth Frequency range of the noise acoustic signal from 24 to 25 kHz Entropy coefficient of noise quality is not less than 0.98 Sound pressure level of the noise signal on the microphone is not less than 100 dB Duration of continuous operation from the battery is not less than 24 hours External dimensions of the stand 120x105x80 mm Maximum width of a cell phone placed in the stand up to 85 mm Weight 1.2 kg