http://www.hk-aoli.com/goods.php?id=544

There are many places where cellphone use is not permitted , such as the meeting room, tribunal, classroom and so on, because we can not break the quietness and seriousness by our pesky moblile rings. What's more, cellphones are strictly prohibited in those confidential places to avoid the leak of the confidentiality. Although we can not let everybody keep their mobile phones off, we can install the signal blocker to solve this problem.

• Specifications:
  

   
  • Passive cooling (completely silent)
  • Mobile phone signal jammer for completely stopping all of those pesky signals
  • This is a perfect device for all those areas that require quietness and seriousness including meeting rooms, museums, theaters, churches, classrooms, and the device is designed to be placed either on a table top or inconspicuously on ceilings
  • Works for 3G/GSM/CDMA
  • CDMA: 870MHz~880MHz
  • GSM: 930MHz~960MHz
  • DCS: 1805MHz~1850MHz
  • PHS: 1900MHz~1980MHz
  • 3G: 2110MHz-2170MHz
  • Radius: 10-20 meters(The jamming Radius still depends on the strength signal in given area)
  • Dimensions: 9.06 in x 3.94 in x 0.83 in

  Package Included:

   
  • 1 x 10~20m 5-Band GSM/CDMA/3G Remote Controlled Cell Phone Signal Blocker
  • 1 x 100~240V Universal AC Adapter
  • 1 x Remote Controller Keychain
  • 1 x Triangular Mount Rack
  • 1 x Band Specific Digital Antennas