What do I need to pay attention to if I want to buy a wifi blocker?
I want to buy a WiFi signal jammer, different signal jammers have different sizes and functions. What should I pay attention to when buying a WiFi jammer?
Before buying a cell phone signal shield, you need to pay attention to some specific factors:
1. The area used. The shielding range of the cell phone jammer is based on the power of the jammer. If it is tested in the field, the shielding range is different according to the strength of the local environmental signal. For example, the weak shielding range of the indoor signal is large, and there are GSM base stations for outdoor use accessories. Then the GSM signal is close to the outdoor shielding range!
2, the size of the power. As we all know, 2G, 3G and 4G: Before buying, you need to know which signals you want to block. Ordinary mobile phone signals (234G) can be selectively blocked. If you only block 23G or only 34G, this is OK Adjusted before leaving the factory, there are also 2.4GWIFI, 5.8GWIFI and other frequency bands. Generally, ordinary signals can be quickly shielded.
3, the frequency range. Shielded frequency bands: CDMA800, GSM900, SCDMA1800, DCS1800, PHS1900, TD-SCDMA (Mobile 3G), CDMA2000 (Telecom 3G), WCDMA (Unicom 3G).