How to choose the right cell phone signal jammer?

First, you need to explain to the manufacturer of the communication blocker equipment where and how much range you need to block. The most important point is whether there are mobile phone signal towers built by operators within three or four hundred meters around, which will affect the selection of the jammer. Find a few more, compare prices and qualifications, and choose the best.

1. Blocking frequency bands: Before buying, you need to know which signals to block. Can selectively block ordinary mobile phone signals (2G 3G 4G). If you only block 2, 3G or only block 3, 4G, this can be adjusted before leaving the factory. However, Mohan's mobile phone signal jammer uses full-band shielding. If users want to shield a certain signal, they only need to install the corresponding antenna on the machine.

2. Applicable places: Regarding the use of shielding, if it is used in indoor places, it is generally a shielding device suitable for examination rooms, conference rooms, offices and other spaces. Gas stations need to use explosion-proof and high temperature resistance; if it is an outdoor open area, you need to use a medium-power signal isolator to achieve a suitable distance.

3. Appearance: The shield can be divided into external antenna and built-in antenna. Generally, external antennas extend outward because they are external antennas, so they take up more space than built-in antennas. A little; since the antenna extends outward, the effect of the external antenna is more stable.

4. Power size: shielding devices can generally be divided into small power, medium power and high power. The power is between 3W and 100W. When we recommend users to choose Mohan communication mobile phone signal jammer, it will be determined by the area to be shielded.

5. Shielding range: The shielding range is proportional to the power. Generally, test rooms use more low-power signal isolators. It is enough to install one in a classroom, and the shielding range is about 200 square meters. The shielding distance can reach 300-400 meters, depending on the local field strength.

6. Volume: Generally speaking, smaller ones are handheld and portable, relatively small and easy to carry; low-power desktops are generally not very large, similar to small notebook computers; high-power ones are relatively bulky, and the size of the drag box is very huge.

7. Power supply: The built-in lithium battery is used for handheld use, and the power adapter can be used to charge the mobile phone signal blocker after the power is used up; the desktop examination room is powered by 220V voltage, and the vehicle power supply is generally powered by 12-36V voltage.