5G mobile phone signal blocker uses 5 ways to teach you how to choose signal blocking equipment from dojammer's blog

Cell phone signal blockers can effectively block cell phone signals in the specified area, but will not affect electronic devices beyond the shielding range. Blockers can effectively block GPS, WIFI, 2G, 3G, 4G, and other signals, and the latest 5G cell phones. In order to ensure the fairness and justice of the college entrance examination, it is necessary to install the latest 5G cell phone signal blocker to effectively prevent candidates from cheating with electronic devices. It can also be used in cells, military, hospitals, offices and other places.

So how to choose a qualified 5G cell phone signal blocker? In fact, you can first choose a good manufacturer, and then choose the equipment. A good manufacturer can also cover after-sales and other issues, and the effect is guaranteed.

5G cell phone signal blocker uses 5 ways to teach you how to choose signal blocking equipment.

First, the appearance is not particularly critical compared to the blocker, just the set structure is different. External antennas can be divided into external antennas and internal antennas. The external antenna occupies a larger space volume than the internal antenna, because the external antenna is connected to the external antenna, bending and stretching outward; the actual effect of the external antenna is more stable, because the wireless antenna extends outward.

Second, the power size of the jammer

The general power range is 3W-480W. Jammers can generally be divided into low power, medium power, and high power. The power is between 3W-100W. It is generally not recommended to use high-power signal jammers, which will seriously affect the base station signal transmission and have a certain degree of radiation source to the body. For tests, colleges, national judicial examinations, etc., it is recommended to strongly recommend some small and medium-power machines.

Third, the size of the power supply system

The handheld is embedded with a lithium-ion battery, and the adapter battery can be used to charge it after the power is used up; the test site of the desktop all-in-one machine uses a 220V working voltage power supply system, and the car-mounted type in the car generally uses a 12-36V working voltage power supply system.

Fourth, the application site

If it is used indoors, the signal blocker suitable for examination rooms, conference rooms, meeting rooms and other areas is generally small power, and the gas station must use explosion-proof and heat-resistant; if it is a wide outdoor area, a high-power signal blocker must be used to achieve the appropriate distance. Especially it is necessary to pass through the wall.

Fifth, the requirements for working frequency

In fact, it is what everyone knows, 2G, 3G4G and 5G: Before purchasing, you must know what data signal you want to block. The general data signal (2345G) can be selectively blocked. If you only block 23G or only block 45G, this can be adjusted before shipment. There are also 2.4GWIFI, 5.8GWIFI and other frequency bands. Generally, ordinary data signals can basically be blocked quickly.