Instructions for use
This product uses the power adapter and the battery two kinds of power supply way.
1. Adapter power supply. Plug the power adapter directly into the power supply and the charging port of Figure II;
2. This product has 8000Mha battery, without power adapter power-on that is battery power;
After you get this product check for first check the packaging: host one;
1. Turn on Figure two power switch, Power LED light, machine into standby state;
Press the Unlock button of the remote control machine to open the work,
press the remote control of the Guan machine shutdown into standby
3. Turn off the power switch on figure two and disconnect the power from the machine.
This product built-in large capacity of the battery continuous working
time of more than 19 hours, recommended if the battery has electricity,
as far as possible to work with batteries.
Integer truncation angle
shown in figure one, the shield transmitter is in front of the machine.
To achieve the best truncation effect, please adjust the position and
angle according to the actual situation. See Tu San for specific
actions. As shown in figure three, for the general recording equipment,
the cut-off distance of this product is about 1.5 meters, truncated
angle of about 90 degrees. The distance and angle may vary for different
recording devices. Some models of its distance is greater than 2
meters, the angle is greater than 120 degrees, but a few models of its
distance may be less than 1 meters, angle less than 60 degrees.
more high-end the general model, the better the effect. When used,
please try to make the Shield transmitter and recording equipment
distance within 1.5 meters, the angle (mainly MIC mouth) within 45
degrees, the closer the distance, the smaller the angle, the better the
note that the above data for the transmitter and recording equipment
without any barrier between the obtained (such as clothing, body, etc.),
in the case of blocking, the truncation distance will be shortened.
1. Mixing frequency Interference mode
product is the industry's first use of mixed-frequency noise jamming
mode, different from the traditional recording interference devices used
by the electromagnetic interference, to avoid recording interference
equipment in the vicinity of the equipment to generate electromagnetic
2. Sound cannot be restored
product through the real random number of the most seed processing,
processing of future generations of sound signals and equipment of the
random interference signal mixed into one, can not be restored through
3. Wide Coverage
with the traditional recording shielding equipment, this product on the
mainstream recording equipment interference distance of up to 2 meters,
interference angle of more than 120 °.
4. Simple, easy to use, flexible
This product is stable and reliable, high degree of product, simple and easy to use.
Product function and Working principle
1. Basic function
the process of working, the recording screen will produce random
interference signals, which can ensure that the original voice
information cannot be restored from the recording signal. Interference
signal to the recording equipment, while not harmful to the human body.
When the jamming signal is picked up by the recording device, it will
cause only one buzzing noise in the recording signal to distinguish the
normal sound signal so as to protect the voice information.
2. Working principle
recording screen in the work process, the true random number of the
most seeds, using the high security encryption algorithm to encrypt the
operation, and then through the high-frequency sound source mixing mode
of the encryption of random number processing, resulting in an
irreversible, silent and overlapping effect of the interference signal
to the sound acquisition equipment interference, thus forming the effect
of sound shielding.
1. The basic condition of the product
the field of recording and shielding equipment, only one piece of
equipment is known, the recording shielding equipment is mainly aimed at
the already obsolete tape recorders and few types of recording pens,
bugs, etc. For the current mainstream recording equipment, mobile
phones, digital recording pens, etc. have no effect or poor effect.
this end, we rely on the accumulation of years of information security
technology, independent research and development of audio shielding
products to meet the mobile phone, digital recording pen and other
mainstream recording equipment shielding function to protect the user's
conversation content security.
2. Shortcomings of traditional technical programmes
traditional recording shielding technology scheme is mainly to use the
wide frequency range of random pulse sequence for disorderly
interference, high-power high-frequency signal to the recording
equipment electromagnetic interference, so that the input voltage of the
front of the sensor or input current exceeds the threshold of the sound
sensor, so that it can not work properly and achieve effective speech
blocking. This method has no noise, but its main disadvantage is that
only the interference effect of analog recording equipment is better,
and the new digital recording equipment is basically invalid. At the
same time high-power radio magnetic signals will produce electromagnetic
radiation, long-term use of human health.
3. Product Competitive Advantage
3.1, support to all kinds of mainstream recording equipment shielding.
in the scope of the shield work, through recording equipment for
recording, from the recording information can not hear the original
in the scope of the shield work, through recording equipment for
recording, from the recording information can not restore the original
3.4, working in the process of recording shielding device does not emit audible sound.
System constraints and restrictions
Here is a description of what this product does not support in some scenarios.
(1) Device type constraint
equipment supports the shielding of all kinds of mainstream recording
equipments, mainly including mobile phone, recorder pen, wireless/wired
bug, wireless video recording equipment, microphone, etc. But because
the mobile phone model continues to introduce new, different brands,
different periods, different levels of mobile phone voice processing is
not the same, so a few models of mobile phone recording shielding effect
is relatively poor.
(2) Coverage constraints
the use of technical principles, the effective shielding distance of
the product is generally 2.5 meters-3 meters, effective shielding angle
of 120° around, and for different recording equipment will have a