1. Protection of communication signals of border operators
2. Operational needs of the troops
3, detention centers, labor camps, large and medium-sized prisons
4. Large Gathering Places
5. Safety precautions for leaders visiting
6, college entrance examination, adult, self-study examination and various colleges and universities
7, the party and the party, enterprises all kinds of small and medium-sized meeting rooms, concert halls, theaters
8, gas stations, oil depots, oil fields, gas stations and other flammable and explosive sites
How to use
1. Select the area where you want to disconnect the handset signal and place the cutter on the desktop or wall of the area.
2. When the installation is complete, plug the power supply and turn on the power switch.
3. After the equipment is connected, press the power switch breaker to work. At this time all the mobile phone opened in the search network state, lost base station signal. The caller is not able to establish a call connection.
Introduction to the principle of cell phone signal shielding device (cell phone signal truncation device)
In view of the above communication principle, the handset shield is at a certain speed in the work process to the low end frequency to the channel to the high-end scanning. The scanning speed can be in the mobile phone receiving message signal to form garbled interference, the cell phone can not detect the normal data from the base station, so that the cell phone can not be connected with the base station. Mobile phone performance for the search network, cell Phone no signal, no service system and so on.