First, you need to explain to the jammer sales manufacturer the place you need to shield and the size of the range. The most important point is whether there are mobile phone signal transmission towers built by operators within three to four hundred meters. These will affect the choice of jammer. type. Find several, compare prices and qualifications, and choose the best.
How to choose the right cell phone signal jammer?
1. Shielded frequency band: Before purchasing, you need to understand which signals you want to block. Ordinary mobile phone signals (234G) can be selectively blocked. If you only block 2, 3G or only 3, 4G, this can be done before leaving the factory. adjusted. However, Texin's mobile phone signal jammer uses full-band shielding. If users need to block a certain signal, they only need to install the corresponding antenna on the machine.
2. Applicable places: Regarding the places where shielding is used, if it is used in indoor places, the shielders generally suitable for examination rooms, conference rooms, offices and other spaces are of the same type. Gas stations need to use explosion-proof and high-temperature resistant shields; if it is used in outdoor open areas, , a medium-power signal jammer is required to achieve the appropriate distance.
3. Appearance: The appearance of the signal jammer for sale can be divided into external antenna and internal antenna. Generally speaking, the external antenna has an external antenna and extends outward, so it occupies a larger space than the internal antenna. One thing; precisely because of the antenna extending outward, the effect of the external antenna is more stable.
4. Power size: Jammers can generally be divided into low power, medium power, and high power, with power ranging from 3W to 100W. When we recommend users to choose a Texin mobile phone signal jammer, it will be based on the area to be shielded.
5. Shielding range: The shielding range is directly proportional to the power. Generally, low-power signal blockers are commonly used in examination rooms. One classroom is enough to install one, and the shielding range is approximately 200 square meters; while for high-power jammers, The shielding distance can reach 300-400 meters, depending on the local field strength.
6. Volume: Generally speaking, the smaller ones are handheld and portable, relatively small in size and easy to carry; the low-power desktop ones are generally not very large, similar to a small laptop; the high-power ones are Relatively bulky, the trailer type is very large.
7. Power supply: The handheld one has a built-in lithium battery. After the power is used up, just use the power adapter to charge it; the desktop examination room uses a 220V voltage supply, and the vehicle-mounted one generally uses a 12-36V voltage supply.
