Designed to protect speech information from interception via acoustic (microphone) and optical (video camera) channels of modern mobile communications.
suitable for most Samsung, HTC, Apple, Sony, Lenovo, Asus tablets the audibility of interference is reduced by the sealed case the generation of interference of the acoustic safe is turned on automatically when the case with the tablet is closed Power supply built-in battery 3.7 V Frequency range of the output acoustic signal, Hz 180 - 11300 Integral sound pressure level of the acoustic noise signal in the frequency range of 20 - 12500 Hz, dB, not less than 65 Continuous operation time from a fully charged battery, not less than h. 25 Overall dimensions (without power supply), mm, not more than 245 * 340 * 60 Product weight, kg, not more than 2.5 Ambient air temperature from 1 to 40 ° C Relative air humidity, not more than 80% at + 25 ° C Atmospheric pressure 630–800 mm Hg Mean time between failures, not less than 10,000 h Average service life 5 years