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20W Output Power Cell Phone Signal Jammer for Exam Halls , Up to 50m Long Distance

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20W Output Power Cell Phone Signal Jammer for Exam Halls , Up to 50m Long Distance

China 20W Output Power Cell Phone Signal Jammer for Exam Halls , Up to 50m Long Distance supplier
20W Output Power Cell Phone Signal Jammer for Exam Halls , Up to 50m Long Distance supplier 20W Output Power Cell Phone Signal Jammer for Exam Halls , Up to 50m Long Distance supplier 20W Output Power Cell Phone Signal Jammer for Exam Halls , Up to 50m Long Distance supplier

Large Image :  20W Output Power Cell Phone Signal Jammer for Exam Halls , Up to 50m Long Distance

Product Details:

Place of Origin: Shenzhen,China
Brand Name: GREETWIN
Certification: SGS, ISO9001
Model Number: GW-JB20

Payment & Shipping Terms:

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
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Detailed Product Description
Product Name:: Signal Jammer For Exam Halls Frequencies: LTE2600 3G 2100 CDMA450 EGSM900 DCS1800
Antenna Type: Omni Antenna With 4 PCS Application: Libraries, Museums, Exam Halls
Output Power: Total RF Power 20W Jamming Range: 20 - 70meters , Depend On Local Signal Strength
Power Supply: AC110-240V,DC 24V Weight: 3.5KG

 

20W Output Power Cell Phone Signal Jammer for Exam Halls , Up to 50m Long Distance

 

 

Description:

 

A mobile phone jammer is an instrument used to stop cellular phones from receiving signals from base stations. The jammer effectively disables cellular phones. It transmits on the same radio frequencies as the cell phone, disrupting the communication between the phone and the cell-phone base station in the tower. That's how the Signal Jammer working.

 

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.

 

Features:

1. Good cooling system,

2. Jamming range up to 50m.

3. cost-effective choice,

4. Stable capability, 

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.

 

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.
 

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 24V   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): 20-50m (Depend on local signal intensity)          Humidity: 5% - 95%

 

20W Output Power Cell Phone Signal Jammer for Exam Halls , Up to 50m Long Distance

 


 

 

Contact Details
Shenzhen Greetwin Technology Co.,Limited

Contact Person: Gavin

Tel: +8615019243082

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