The network jammer in the usual sense refers to the signal jammer specially used to shield the data signal in the form of wireless transmission. The category includes multiple frequency bands, only wifi shielding, but also need to be split, namely 2400-2500MHz wifi shielding, often called 2.4G frequency band wifi shielding, and one is 5700-5900MHz wifi shielding, often called Shield for 5.8G band wifi.
So, in addition to blocking wifi, what other signals can the network blocker have? In fact, the number of shielding modules that can be installed on a single unit is relatively large in the current shielding device, generally at least 8-12, or even more. The wifi shielding only occupies 2-3 frequency bands, and the extra frequency band space, It is completely possible to install shielding modules of other types of signals, such as for mobile phone calls and voice, as well as network signals for data transmission through 3G, 4G, and 5G, and can also be attributed to the shielding of network signals.