Specifications:
High quality and reliability
When used, the jammer 5M cell phone signal blocker effectively disables cellular phones
This cell phone signal jammer creates enough interference to block all cell phone signals around you
Cell phone signal jammer features full metal construction that creates a solid and technical feeling
This cell phone signal blocker creates a 0.5-5meters (10-feet) radius cell phone signal black area
Built-in 1500mAh battery lasts 3 to 4 hours
Light weight, small size
The jamming radius still depends on the strength signal in given area
Cell phone reception blocker fits for class rooms and small seminar halls, meeting rooms and board rooms, private offices, VIP and privacy-sensitive place
3-channel type of this cell phone signal jammer can efficiently provide shield for mobile signals from GSM / PHS / 3G
5-Band Blocking Support: GSM 800/900/1800/1900Mhz, PHS and 3G
Dimensions: 4.17 in x 1.73 in x 0.75 in
Details:
This cell phone signal jammer can make effect only on the transportations of mobile phones
Compact size - only slightly bigger than a standard iPod (antennas off)
LED indicator make this cell phone signal jammer easy to operate
3-channel type of this cell phone signal jammer can efficiently provide shield for mobile signals from GSM / PHS / 3G
This cell phone signal jammer can be run on car power, so convenient
Other details
Accessories
Operation:
As with other radio jamming, cell phone jammers block cell phone use by sending out radio waves along the same frequencies that cellular phones use. This causes enough interference with the communication between cell phones and towers to render the phones unusable. On most retail phones, the network would simply appear out of range. Most cell phones use different bands to send and receive communications from towers (called frequency division duplexing, FDD). Jammers can work by either disrupting phone to tower frequencies or tower to phone frequencies. Smaller handheld models block all bands from 800MHz to 1900MHz within a 30-foot range (9 meters). Small devices tend to use the former method, while larger more expensive models may interfere directly with the tower. The radius of cell phone jammers can range from a dozen feet for pocket models to kilometers for more dedicated units. The TRJ-89 jammer can block cellular communications for a 5-mile (8 km) radius
Interestingly enough, less energy is required to disrupt signal from tower to mobile phone, than the signal from mobile phone to the tower (also called base station), because the base station is located at larger distance from the jammer than the mobile phone and that is why the signal from the tower is not as strong
Older jammers sometimes were limited to working on phones using only analog or older digital mobile phone standards. Newer models such as the double and triple band jammers can block all widely used systems (CDMA, iDEN, GSM, et al.) and are even very effective against newer phones which hop to different frequencies and systems when interfered with. As the dominant network technology and frequencies used for mobile phones vary worldwide, some work only in specific regions such as Europe or North America
How to install Antenna and turn on the Device
To install the antennas, please try to screw the antennas tightly to the corresponding position on the device according to the length remark on the device and antennas
The antenna connectors of output power and working instruction LED on the cover
Longer White line connect with antenna which are identified by CDMA GSM, DCS PHS, 3G and GPS as the indication accordantly, will be ON when the Power SW placed, Power LED shows green, then the machine to work
How to Charge and When Need to Charge:
Please adjust the Power SW to be "OFF" position while charging for the jammers
And then you will find Charger LED will become Red
In the first three times, please try to charge for the jammer for 12Hours
Every time after only 6 hours of charge time
Red light: When charging for jammer, the indicator light will be on, When the built-in battery is charged full, the indicator light will be off. When the power is not enough, the Power LED will be blinked and into red. It means you have to recharge for the jammer
It can charging and work at same time too
Connection
Four SMA connectors which are used to connect with antenna (CDMA GSM/DCS PHS 3G/GPS ). One charging connector
NOTE:
Do not place the device directed to the sunlight or near the high temperature fires
While it is working, the surface temperature is about 45°C. It is normal. However, if it is higher than 45°C, it is abnormal. Please put the power SW to OFF immediately and try to contact your local distributor or agent
The shielding range of the device will be determined by the local signal strength. In different situation, it will be with different performance
Please try to put the device in a higher position while it is working .It will be better. The suggested height is about 2M
To avoid the loss of function of the device, please try to avoid the device placed on or the metal materials Do not turn on the power before the antennas is installed
Do not put the device near computers, notebook computers, televisions, stereos, and radios and so on , in order not to make some interference for these equipments
If the charged times is more than 500 times and then can not be charged any more , please contact your local dealer or dealer and replace the battery
If the antenna is not properly installed in accordance with the manuals, the shielding range will be not so good. make sure the correct installation before turn on the power
Package Included:
1 x 0.5~5m 5-Band Cell Phone Signal Blocker
1 x AC Charger
1 x Car Charger
