Advanced Mobile Phone Signal Jammer with High + Low Outputs

Mobile Phone Signal Jammer for completely stopping all of those pesky cell phone calls, with a typical range of 40 meters. This mobile phone Signal Jammer will stop signals on the DMA, GSM, DCS, and 3G bands without interrupting any other electronic device, and with the high and low setting, you can modify how far the jamming coverage will be. This is a perfect device for all those areas that require quiet including meeting rooms, museums, theaters, churches, classrooms, and is designed to eithe