This Cellular Blocker is a jammer device that transmits low power radio signals, which cut-off communications between cellular handsets and cellular base-stations in a regulated area.
The Blocker does not interfere with any communications other than cellular within the "quiet" zone and does not interfere with cellular communications outside the regulated area.
The Cellular Blocker contains microprocessor and modules that are configured to cover of all types of cellular systems including GSM, CDMA, DCS, and 3G type of freequencies. Depends on the location the blocker is capable to cover an area of up to 50 feet depends on the location.
Each module within the bloker has an specific antenna to maxize the output power.
A remote control is included to turn the blocker on and off.
This is a professional system that is easy to operate and ready to do the job right out of the box.
* Except for Law Enforcement, this item is not for sale in the United States.