1. In order to ensure that the signal interference of the Signal Jammer reaches the best effect, generally, the effect of installing an intermediate position of more than one meter and less than three meters is the best;

2. The signal jammer is relatively small. It can be fixed on the wall with ordinary expansion screws. Of course, it can also be directly placed on a higher position. But in this case, the effect is not very good. In this case, the signal jammer is mostly placed near the blackboard podium in front of the classroom, which can be directly placed on the podium under the blackboard. If the number is large, one can be placed in front of and behind the classroom. If it is not enough, it can be placed in the middle of the classroom to achieve the best shielding effect.

3. After installation, check whether all parts are connected well and whether there are problems with accessories such as power supply;

4. Finally, plug the power adapter into the adapter power socket of the machine. Generally, the signal is shielded after half a minute of power on.

Finally, open the mobile phone to see if the signal is shielded by the signal jammer. Is it very simple!