Beijing Signal Knight Technology and Trade Co.Ltd.

To keep you away from noise or disturbance of unexpected cell phone calls or text messages (SMS)
World wide compatible.
To block cell phone communication links within an effective area.
No transmissions or receptions of cell phone call in coverage area.
All specified frequency bands will be blocked simultaneously.
For using at meeting rooms, conference rooms, museums, galleries, theatres, concert halls, churches, temples, restaurants, classrooms, training centers, factories, banks, trains, buses etc.



Jamming Area
0.5 meters to 12 meters