Mobile phone jammers can protect signals in multiple areas

It has good anti-reduction performance and good correlation. It can prevent the radiation of information signals and interference signals. Unique signal filling technology, covering a large range of 10kHz and 2GHz seamless interference; the filter design to suppress radiation conduction adopts a high-efficiency power supply design, two information transmissions twice play a reinforcement role, encrypt spatial random numbers, and electromagnetic radiation from mobile cell phone jammer The signal is disturbed and cannot be recovered. Can be used alone or easy to install. Small size, electromagnetic compatibility, can be used on the Internet. Partial protection is only in independent mode, and the network can protect the entire area. Performance standard: BMB4-20002 interference

I want to make it clear where it is used. Most schools use test room-type mobile phone jammers, which are suitable for long-term work and are durable. The second is how big are we in the shielded area? For example, a room of 100 square meters or a site of several thousand square meters. If the area is large, the power should be larger, if the area is small, you should consider choosing a smaller shielding power. Then, which frequency bands need to be shielded.

Have China Mobile, China Unicom, China Telecom and CDMA been blocked? Still only need to shield part of the frequency band. At this time, I remind everyone that if you want to buy a suitable mobile phone jammer to achieve the effect, it depends on the method of use. The main points are as follows: 1. The indoor mobile phone jammer is recommended to be placed at a height of about 180cm-220cm from the ground, and the angle is best to be forward. 2. Whether there are obstacles (such as walls, metal products, etc.) between the mobile phone jammer and the wireless communication equipment (mobile phones, etc.).

The interference signal from the signal jammer will attenuate to varying degrees after passing through the obstacle, please try to avoid it. 3. The weaker the wireless communication signal strength in the use environment, the stronger the theoretical shielding effect of the shielding device. 4. The farther the jammer application environment is from the signal tower, the stronger the theoretical shielding effect of the mobile phone jammer.