Ultrasonic iPhone Jammer (U-11)

Introduction
iPhone Jammer U11 is specially designed for hidden and covert protection of conversation from listening and recording of confidential information on devices with microphones such as smartphones, dictaphones (include professional and digital), radiomicrophones, wired microphones.
The ultrasonic jammer U11 creates a noiseless powerful barrier to the microphones in modern phones iPhone, Samsung and others, as well as advanced voice recorders: Edik mini etc, which absolutely does not disturb to listen companion but make not possible any audio recording.
Due to such interference the conversation on the record transforms into the noise, therefore can not provide the useful informationDisadvantages of other kinds of audio recorder jammers

Disadvantages of other kinds of audio recorder jammers
Most of the devices to supress audio recorders operate on the principle of generating a noise or a speech-similar noise. This method is quite effective, but has some disadvantages - the work of such devices is audible, therefore it also interfere to the interlocutors to talk. Furthermore, it is impossible to use this kind of audio recorder jammers in secret from an interlocutor.
Another popular type of devices to prevent audio recording are electromagnetic audio recorder jammers. It generates special electromagnetic noise, which interferes to easdropping and recording devices to make a recording. Unfortunately this electromagnetic noise does not produce a sufficient effect on many models of modern digital recorders or the suppressing distance is too small.