WIFI Cell Phone Signal Jammer , Mobile Rf Frequency Jammer with 4 Antennas

Basic Information
Place of Origin: Shenzhen,China
Brand Name: GREETWIN
Certification: SGS, ISO9001
Model Number: GW-JB20
Minimum Order Quantity: 1pcs
Price: Negotiable
Packaging Details: Carton with PE Foam
Delivery Time: 3 Working Days After Received Payment
Payment Terms: T/T, L/C, Western Union, MoneyGram
Supply Ability: 5000pcs per Month
Product Name:: 4 Antennas 20Watt Signal Jammer Frequencies: GSM900 DCS1800 PCS1900 WCDMA2100
Power Supply: AC110-240V,DC 5V/12A Application: Examination Hall
Output Power: 20Watt Jamming Range: 20 - 70meters , Depend On Local Signal Strength
Antenna: 4 Pcs Of External Long Omni Antennas Weight: 3.5KG
High Light:

cell phone signal scrambler

,

cell phone signal blocker

 

WIFI Cell Phone Signal Jammer , Mobile Rf Frequency Jammer with 4 Antennas

 

 

Signal Jammer Description:

The University Grants Commission has decided to allow universities to deploy low-powered jammers in examination halls to prevent students using mobile phones, bluetooth and other gadgets for copying.

In a notice to all universities, the government has a policy to provide the jammers on lease in order to prevent unfair means used through radio frequency based devices by the examinees.

 

Now we recommend our GW-JB20 for you which can work excellently in jamming the signals at examination hall.

This is a desktop adjustable 20watt ouput power jammer, what is different from many other type of desktop adjustable output power jammers in the market is that it owns powerful jamming effect and ability. This is a 4 bands adjustable output power jammer so that it can cut off the 2G, 3G, 4G, WiFi Signals very easily, and since designed with high quality the jamming radius is up to 70 meters at most according to the signal strength.

The Signal Jammer GW-JB20 has 4 antennas supporting 4 frequencies of GSM, DCS, WCDMA, PCS or any other frequencies can be customized and it comes with good cooling system. 

 

GREETWIN COMPANY is a special manufacturer of signal jammers and signal repeaters.
Our market research and development department has introduced new products to meet the ever-changing needs of customers since 2008.
To solve your information security issues, is our relentless pursuit.


We also have a lot of high quality products on this website and will be grateful if you can browse more products.

Need mobility? Please browse our portable mobile blocker section.
As always, if you have any questions we are happy to assist you.

 

Signal Jammer Features:

1. Good cooling system,

2. Working 24 hours continuously.

3. Jamming range up to 50m.

4. Stable capability, cost-effective choice

5. Output power 20w , make more efficient jamming.

6. Heat sink case makes the jammer work in a more stable and cool situation.

7. Four channels with different frequency range,

or customize other cellular standard in the world.

Such as Walkie Talkie,450MHz,GPRS,iDEN,GPS, Galileo,Compass,Glonass,UMTS,WiFi,AWS,LTE 4G.

8. Transmit noise signal to cut off all communication between cell phone and Base station.

The jammed cell phone will show “No Service” .

will not be able to receive or dial outgoing calls.

 

Signal Jammer Application:

Theatres, offices,Meeting Room, Oil and Gas Storage Facilities and fields, Hospitals,
Recording Studios, Banks, Contract Tendering Rooms, Churches, Conference
Rooms, Classrooms, Testing Facilities, Security Services, Military, Secret
Services, Libraries, Museums, Courts, Border Patrol and Drug Enforcement,

Customs, House, mosques,  Libraries, Prisons, etc.
 

Signal Jammer Specification:

 

Only interfere downlink frequency of mobile system, can’t affect normal operation of Base Station.

 

GW-JB20 is a sophisticated high power desktop cellular phone jammer.

It can be used for all the worldwide network frequency system. 

It is the best choice for Examination Hall, Conference rooms, and offices.

 

Output port

Frequency

Average output power

Channel output power

CDMA

851-894MHz

37dBm

4dBm/30KHz(min)

GSM

925-960MHz

37dBm

3dBm/30KHz(min)

DCS

1805-1880MHz

37dBm

3dBm/30KHz(min)

PCS
or 3G

1930-1990MHz

36.5dBm

1dBm/30KHz(min)

or 2110-2170MHz

Power supply: AC110-240V,DC 5V/12A Energy consumption: 60w

Dimension: 45*24*8.5cm Running temperature: -10 to +55'C

External omni antennas Weight: 3.5kg Output power: 20w

Jamming range(radius): 2-50m (Depend on local signal intensity) Humidity: 5% - 95%

 

WIFI Cell Phone Signal Jammer , Mobile Rf Frequency Jammer with 4 Antennas 0

 


 

Contact Details
Hawk Greetwin

Phone Number : +8613005164071

WhatsApp : +8615112267605