Shenzhen Greetwin Technology Co.,Limited
| Payment Terms | T/T, L/C |
| Supply Ability | 5000pcs per Month |
| Delivery Time | 3 Working Days After Received Payment |
| Packaging Details | Carton with PE Foam |
| Product Name: | 3G 4G Adjustable Signal Jammer |
| Frequency range | 3G 4G or other frequencies can be customized |
| Application | Libraries, Theatres, Schools |
| Antenna | 5 pcs of omni antenna |
| Operating Humidity: | 5% - 95% |
| Jamming range | 2 - 40meters , depend on the signal strength |
| Output Power | 12.5W |
| Working Time | Continuous working |
| Brand Name | GREETWIN |
| Model Number | GW-JB5A |
| Certification | SGS, ISO9001 |
| Place of Origin | Shenzhen,China |
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Product Specification
| Payment Terms | T/T, L/C | Supply Ability | 5000pcs per Month |
| Delivery Time | 3 Working Days After Received Payment | Packaging Details | Carton with PE Foam |
| Product Name: | 3G 4G Adjustable Signal Jammer | Frequency range | 3G 4G or other frequencies can be customized |
| Application | Libraries, Theatres, Schools | Antenna | 5 pcs of omni antenna |
| Operating Humidity: | 5% - 95% | Jamming range | 2 - 40meters , depend on the signal strength |
| Output Power | 12.5W | Working Time | Continuous working |
| Brand Name | GREETWIN | Model Number | GW-JB5A |
| Certification | SGS, ISO9001 | Place of Origin | Shenzhen,China |
| High Light | cell phone blocker jammer ，cell phone signal blocker | ||
3G 4G Adjustable RF Blocker , Mini Portable Mobile Phone Signal Jammer for Schools
Mobile Phone Signal Jammer Description:
If you are looking for a top-of-the-line cell phone jammer, you might be interested in an adjustable model.
Adjustable cell phone jammers are considered to be the most sophisticated type of jammer on the market today. This is because they are fixed units that contain adjustable settings, making it possible to keep cell phone chatter and disturbances away from large areas restricted from areas considered to be Mobile Free Zones
This is a desktop adjustable 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 5 bands adjustable output power jammer so that it can cut off the 3G, 4G or other customized Signals very easily, and since designed with high quality the jamming radius is up to 40 meters at most according to the signal strength.
Mobile Phone Signal Jammer Features:
1. Good cooling system,Jamming range up to 40m.
2. Working 24 hours continuously.
3. Turn on/off by remote control
4. Stable capability, cost-effective choice
5. Output power 12.5w , make more efficient jamming.
6. Heat sink case makes the jammer work in a more stable and cool situation.
7. Five 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.
Mobile Phone 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.
Mobile Phone Signal Jammer Specification.
Only interfere downlink frequency of mobile system, can’t affect normal operation of Base Station.
GW-JB5A 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 Conference rooms, and offices.
| Output port | Frequency | Average output power | Output power |
| CDMA800 | 851-894MHz | 35dBm | 3W |
| GSM900 | 925-960MHz | 35dBm | 3W |
| DCS1800/ PCS1900
| 1805-1880MHz/ 1930-1990MHz | 33dBm | 2W |
| 3G | 2110-2170MHz | 33dBm | 2W |
| GPS (Optional) | 1570-1580MHz | 33dBm | 2W |
| WIFI (Optional) | 2400-2500MHz | 33dBm | 2W |
| Total Output Power | 12.5Watt | ||
| Power Supply | AC110-240V,DC 5V/8A | ||
| Power consumption | 30 Watt | ||
| Weight | 3.0kg | ||
| Size | 210*170*50mm | ||
| Running temperature | -10℃ to +55℃ | ||
| Humidity | 5% - 95% | ||
| Complete accessories | Four omni-directional antennas, Power cable, Remote control, Fixed Mount | ||
| Jamming range(Radius) | 2 - 40meters , depend on local signal strength | ||
This device pack in a strong safety box with PE foam inside.
It gives top-class protection to the terminator device, and allows you to carry it easily like a big suitcase.
| Whip Antenna Specifications
| |
| Frequency Range | The same as the jammer channel |
| Impedance | 50 Ohm |
| VSWR | <1.5 |
| Gain | 2-3dBi |
| Polarization | Vertical |
| Radiation Direction | Omni |
| Max. Power | 50 W |
| Connector | SMA |
| Color | Black |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company,Seller,Other
Year Established:
2005
Total Annual:
5million-10million
Employee Number:
100~200
Ecer Certification：
Active Member
Shenzhen Greetwin Technology Co., Limited is one of the leading suppliers which specializes in designing and manufacturing RF Jamming Equipment and Wireless Coverage Products. Wireless Coverage Products include 2G 3G 4G LTE 5G RF Repeater. The RF Repeater... Shenzhen Greetwin Technology Co., Limited is one of the leading suppliers which specializes in designing and manufacturing RF Jamming Equipment and Wireless Coverage Products. Wireless Coverage Products include 2G 3G 4G LTE 5G RF Repeater. The RF Repeater...
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