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: | GSM DCS 3G Cell Phone Jammer |
| Application | Home, Class, Conference Room, Office |
| Working Time: | Long time 24 Hours |
| Antenna | 4 pcs external omni antennas |
| Operating Humidity: | 5% - 95% |
| Jamming range | 2 - 40meters , depend on local signal strength |
| Output Power | 10W |
| Weight | 3.0KG |
| Brand Name | GREETWIN |
| Model Number | GW-JB4A |
| 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: | GSM DCS 3G Cell Phone Jammer | Application | Home, Class, Conference Room, Office |
| Working Time: | Long time 24 Hours | Antenna | 4 pcs external omni antennas |
| Operating Humidity: | 5% - 95% | Jamming range | 2 - 40meters , depend on local signal strength |
| Output Power | 10W | Weight | 3.0KG |
| Brand Name | GREETWIN | Model Number | GW-JB4A |
| Certification | SGS, ISO9001 | Place of Origin | Shenzhen,China |
| High Light | cell phone signal scrambler ，cell phone blocker jammer | ||
4 Antennas GSM 3G Full Band Smartphone Jammer with Optional Jamming Range
Signal Jammer Description:
Due to the highly development of the technology, a lot of advanced jammer products have come into the market and also there are various types of adjustable output power jammers in the markets and here this 4 Bands Powerful Desktop adjustable output power Signal Jammer GW-JB4A being introduced here is the newly type and owns powerful ability and it can work continuously.
The Signal Jammer GW-JB4A has 4 antennas supporting 4 frequencies of GSM, DCS, WCDMA, PCS, WiFi, GPS and any other frequencies can be customized.
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 10w , 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-JB 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 | 10 Watt | ||
| 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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