250W GPS Jammer/Mobile Phone Jammer/RF Jammer (GW-J250CW)

- Oct 12, 2016-

Basic Info
  • Model NO.: GW-J250CW

  • Trademark: Greetwin

  • Origin: Shenzhen

  • Outdoor Using: Waterproof Jammer

  • Specification: ISO9001

  • HS Code: 8517699000

Product Description

250W GPS jammer/Mobile Phone jammer/RF jammer(GW-J250CW)

Developed specially for prisons and other large sensitive facilities, such as military installations and government compounds.
The rapid development of wireless communication, makes great convenience to the lives of people around the world. But criminals' abuse already seriously do harm to people's lives and impartial law enforcement.
GREETWIN specialized in developing the jamming system for the buildings, completely block the inmates cellular phone communication inside the prison. We have been successfully applied our high power jamming system in the European, South American, mid-east countries and etc
GW-J250CW is constructed inside a special metal enclosure, incorporating an efficient "smart active" cooling system with incoming air filters, which enables the system to operate 365 days/24 Hours/7days continuously even in hot weather. Its secure design ensures that the prison inmates and unauthorized prison personnel cannot tamper with the safe and continuous operation of the system.


1. Circuit, shock, temperature and voltage protection
2. Outdoor using, Good cooling system, work continuously
3. Stable capability, cost-effective choice
4. High output power make high jamming range
5. Four /Five channels with different frequency range,
Or customize other cellular standard in the world.
Such as AM ,FM ,450MHz, GPRS, iDEN, GPS, UMTS, WiFi, AWS, 4G LTE. VHF, UHF. Wimax,etc
6. Each channel can be controlled separately and simultaneously.
Manual adjustable output power with each channel.
7. Special Waterproof and solid housing for all weather protection.

System Advantages
Signal Source:  VCO
Continuous operation, even in hot climates, with no time limit. 
Secure design to avoid sabotage. 
(VSWR) circuit protection to ensure system will not burn out should there be antenna short circuiting or disconnection 
Optional Features:
Selection of antennas to provide more flexibility regarding jamming coverage. 
Special additional housing for all weather protection. 
Can use the UPS and battery

Prisons, military, government, Oil and Gas Storage Facilities and fields, Churches, Theatres, News Conference Rooms, Libraries, Museums, Courts, Border Patrol and Drug Enforcement, Customs, mosques, etc.
ChannelFrequency RangeOutput Power(±1dBm)
CH1851~894 MHz47dBm
Power Supply: AC110-240V,DC 27V          Output power: 250W
Jamming radius: 20-300M depending on the environment signal strength
Power Consumption: 800W                           Weight :35Kg 
5pcs External Panel Antennas or omni directional antenna              Size(L×H×W):510×430×350mm
Humidity: 30%-95%                   
 Working temp: -20 to +55 degree Celsius

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