How to choose the right shielding devices in the market? Are there any problems to avoid? How to normally consider the differences of shielding products and avoid pit mining?

First, we need to know the coverage and power of this frequency jammer. If possible, we'd better test the field signal. Compared with the environment, the impact on the shielding products is still large. If the nearby BTSs are densely distributed and the signals are relatively strong, the power of the shield can be increased to achieve the shielding effect by improving the power output. Because the environment is different in each place, some BTSs are not equipped with 5G signals. Naturally, the shields near the BTSs do not need to shield 5G signals, which can save some costs. If it is not needed temporarily, consider whether 5G jamming module can be installed for this frequency jammer in the future to pave the way for the future.