Built-in Antenna Jammer WiFi/Bluetooth + UHF + VHF + 2G/3G/4G Mobile Phone signal Blocker

Built-in Antenna WiFi Bluetooth UHF VHF 3G 4G Mobile Phone signal Jammer (also known as Signal Jammer / breaker / suppressor / truncation / isolators / meeting information security machine) is my factory using advanced foreign technology, mainly for the national college entrance examination, adult college entrance examination, self-examination status quo and various tertiary institutions in the examination process, some criminals use mobile phones to cheat the status quo, and combined with various types of intermediate and high school students use mobile phones during school hours recklessly text messages, as well as government agencies, various types of medium and large enterprises small meeting rooms, concert halls, theaters and other places in the phone serious annoyance and noisy, according to the actual situation of domestic mobile communications high-tech well-developed product that the radius of 1-15 meters (1-200 square meters) in the partition GSM / DCS / CDMA / PHS / 3G (TD-SCDMA / CDMA2000 / WCDMA) / 4G mobile phone signal, 2.4G / 5.8GWIFI radio signals and walkie-talkies transmit band UHF400-470M, VHF136-167M, the phone can not be made and received, intercom does not work, but does not interfere with the work of other electronic teaching equipment, cell phones and walkie-talkies to leave off the range, you can resume normal use.