VHF / UHF / GSM Prison Jammer 900 MHz Jammer Device For Law Court / Library
VHF / UHF / GSM Prison Jammer 900 MHz Jammer Device For Law Court / Library


multiple frequencies, 14 bands prison  jammer/blocke,cut  VHF, UHF ,2G,3G, 4G




This full spectrum signal jammer is with 14 channels. RF output power of each channel   is no less than 1 watt, effective shielding any cheating signal.


The jammer adopts DC 19 power supply. It is equipped with a precision voltage regulator circuit, even if the voltage fluctuation is changeable, it also won't affect the normal work .


Host cooling structure of shell is by professional design. It can endure high temperature environment, by transferring heat quickly to the heat exchange surface , avoid heat  local  accumulation.


Two mute fans instant remove the power amplifier heat, to ensure the stability of the host long continuous operation.


it is suitable for use in school examination rooms, prisons, clubhouses and government departments.





Output port


Average out-

putting power

Channel out-

putting power


135-200 MHz




200-300 MHz




300-400 MHz




400-500 MHz




500-600 MHz




600-700 MHz




700-800 MHz




851-894 MHZ

30dBm 3dBm/30KHz(min)
GSM 925-960 MHZ 30dBm 3dBm/30KHz(min)
DCS 1805-1990 MHZ 30dBm 3dBm/30KHz(min)
3G 2110-2170 MHZ 30dBm 3dBm/30KHz(min)
WIMAX 2300-2400 MHZ 30dBm 3dBm/30KHz(min)
WIFI 2400-2500 MHZ 30dBm 3dBm/30KHz(min)
4G 2620-2690 MHZ 30dBm 3dBm/30KHz(min)

Power supply: AC adapter   (AC220V-DC19V)    Weight :3.5kg

Semidiameter of interception:2m-50m(depend on site signal strength and environment condition)

Working Hours:Continuously more  than 24hours  Power consumption :80watts

Humidity: 30%-95%                   Running Temperature: -20 to +55 Celsius Degree




Competitive Advantage:


  1. Design of soft-start circuit, this function can maintain the stable operation condition, avoid mechanical switch to produce lighter phenomenon.
  2. with good cooling system, can operate for long time.
  3. It is a high-tech product made by our company .it adopts  foreign advanced technologyand imported components to ensure the quantity and stability.
  4. Effectively making subsections of frequency spectrums, just interfering downlink and causing no interception of base station
  5.  Perfect Alarm System, fully protected circuit in case of disconnection of antennas. 
  6.  this jammer is with 14 bands ,can block all mobile signal and radio signal .

  7. the antenna could be designed inside or expose to the air! 




1. Conference room, auditoriums, law court, library, exam room, school, cinema, theater, museum,                 hospital etc.
2. Places where using mobile phones is prohibited such as Service Station, Security Services, Military           Units, Border Patrol and Drug Enforcement, Customs, etc.



gsm gps signal jammer explained

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