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20W Output Power Cell Phone Signal Jammer for Exam Halls with 50m Long Distance Coverage

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20W Output Power Cell Phone Signal Jammer for Exam Halls with 50m Long Distance Coverage
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Features
Specifications
Dimensions: 45×24×8.5cm
Power Supply: AC110-240V, DC 24V
Energy Consumption: 60W
Jamming Range: 20-50m Radius (dependent On Local Signal Intensity)
Operating Temperature: -10°C To +55°C
Humidity: 5% - 95%
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20W Output Power Signal Jammer

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50m Long Distance Cell Phone Signal Jammer

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Exam Halls Mobile Phone Jammer
Basic Infomation
Place of Origin: China
Brand Name: UND
Model Number: U-JB20
Payment & Shipping Terms
Delivery Time: 5-8 days
Payment Terms: T/T
Supply Ability: 100
Product Description
Cell Phone Signal Jammer for Exam Halls
20W Output Power with Up to 50m Long Distance Coverage
The U-JB20 mobile phone jammer is designed to effectively disable cellular communications within examination halls and other secure environments. By transmitting on the same radio frequencies as cellular devices, it disrupts communication between phones and base stations, displaying "No Service" on affected devices.
Key Features
  • Advanced cooling system for optimal performance
  • Effective jamming range up to 50 meters
  • Cost-effective security solution
  • Stable and reliable operation
  • 20W output power for efficient signal blocking
  • Heat sink casing ensures stable, cool operation
  • Four-channel frequency coverage for comprehensive blocking
  • Customizable frequency options available
  • Transmits noise signal to disrupt all cellular communications
Applications
  • Examination Halls and Classrooms
  • Conference Rooms and Meeting Spaces
  • Theatres and Recording Studios
  • Hospitals and Healthcare Facilities
  • Banks and Financial Institutions
  • Government and Military Facilities
  • Prisons and Correctional Facilities
  • Libraries and Museums
Technical Specifications
Only interferes with downlink frequency of mobile systems without affecting base station operations
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 or 2110-2170MHz 36.5dBm 1dBm/30KHz(min)
General Specifications:
Power Supply: AC110-240V, DC 24V
Energy Consumption: 60W
Dimensions: 45*24*8.5cm
Weight: 3.5kg
Output Power: 20W
Jamming Range: 20-50m radius (dependent on local signal intensity)
Operating Temperature: -10°C to +55°C
Humidity: 5% - 95%
20W Output Power Cell Phone Signal Jammer for Exam Halls with 50m Long Distance Coverage 0
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