Mobile jammers are closely related to the shielding range

Compared with the mobile phone jammer, the appearance is not particularly important, but the structure of the setting is different. From the appearance, mobile cell phone jammer can be divided into external antennas and built-in antennas. The external antennas extend outward due to the external antennas. The external antennas are more stable because of the extended antennas. In addition to the external power adapter of the antenna, the external antenna of the machine is also external, so compared to the internal antenna, the space is larger; the antenna and power supply of the internal antenna are installed in the chassis, which occupies a smaller area. convenient. Battery-powered, the handheld is a built-in lithium battery, which is convenient to carry, and you can use the charger to charge after the power is used up; 220V power supply, the desktop used in the examination room is powered by 220V voltage, and there is a car-powered mobile phone jammer. The car is generally powered by 12V voltage.

Customize a spherical shielding space according to the power of the mobile phone jammer, and automatically form a shielding magnetic field within the specified range, so that mobile phones (including PHS-PHS-GSM-China Unicom, China Mobile, CDMA-China Telecom) can be in this space The mobile phone inside is invalid. When the mobile phone jammer is in the working state, it can disable the signal receiving and sending function of the mobile phone within the specified range, and cannot dial out and dial in, so as to achieve the purpose of compulsory prohibition. The shielding range of the mobile phone jammer is based on the power of the shielding device. If the shielding range is different according to the strength of the local environmental signal during the field test, for example, the weak shielding range of the indoor signal is large, and the accessories for outdoor use are GSM base stations. Then the GSM signal is close to the outdoor shielding range!