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According to the blocking frequency band: You need to know which signals to block before buying. Ordinary mobile phone signals (2345G) can be selectively blocked. If you only block 2G or only block 345G, this can be adjusted before leaving the factory. There are 2.4GWIFI, 5.8GWIFI, VHF, UHF and other frequency bands. The role of each signal frequency band needs to be explained here. To put it simply, 2G is the frequency band for making calls, and 2345G is the frequency band for mobile Internet access, so it depends on the specific shielding requirements for the frequency band. Power supply mode: Buy Cell Phone Blocker Online From India Power supply mode Generally, there is a built-in lithium battery on hand, and the power adapter can be used to charge it after the power is exhausted; the desktop test room is powered by 220V, and the vehicle is generally powered by 12-36V. Appearance: cell phone jammer Appearance can be divided into external antenna and built-in antenna.

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