• Jun , 07 2023

Since the use of mobile phones needs to be limited in many situations, installing network blockers is the most effective way to solve this problem. After the comparison of product functions and support performance, the question arises. Why do most of the control systems of mobile phone blockers use wired transmission? At present, the control system of the common network shield is connected by wire...

• Apr , 18 2023

In recent years, with the improvement of safety protection standards and the improvement of emergency response plans for various emergencies, special departments of armed police or public security have started to equip high-power vehicle frequency interferometers successively. In the face of various tasks and application scenarios, the discussion on whether to choose omnidirectional antenna or dir...

• Apr , 18 2023

Radio transmission uses electrical signals as message carriers, and high frequency radio electromagnetic waves are mainly transmitted by the ionosphere. Electrical signal interference (ESI) is an electronic noise that interferes with cable signals or even reduces the integrity of wireless signals. ESI is usually generated by a signal radiator device. There are also conduction interference and radi...

• Apr , 18 2023

Before adulthood, children tend to have poor self-control, become obsessed with mobile games, spend too much time in the virtual world of mobile networks, and thus waste their studies and family relationships. Parents of children are also racking their brains and trying to organize all kinds of ways to prevent such things from happening, so many parents want to block the mobile phone signal at hom...

• Apr , 13 2023

Signal Shielders can be roughly divided into three classes according to the power size. The first class is of low power type, which means the transmission power of each shielding module is less than 2-3W. The second stage is of medium power type, which means that the transmission power of the shielding module is between 10 and 20W. The third is the high power type, which means that the transmissio...

• Apr , 13 2023

In recent years, with the improvement of safety protection standards and the improvement of emergency response plans for various emergencies, special departments of armed police or public security have started to equip high-power vehicle frequency interferometers successively. In the face of various tasks and application scenarios, the discussion on whether to choose omnidirectional antenna or dir...

• Apr , 13 2023

In order to welcome the college entrance examination in June and the high school entrance examination in July each year, many schools that are about to become exam venues have already begun the construction of standardized exam venues. The intelligent shielding system is a project that must be well constructed, but when customers discuss the scheme and equipment selection of the intelligent shield...

• Apr , 04 2023

At present, as long as the various examination items are more formal or highly concerned, the purpose of installing the mobile phone signal shielding device in the examination room is to prevent the candidates taking the examination, and stealthily use wireless communication tools such as mobile phones to cheat illegally during the examination process. Over the years, from time to time, some candi...

• Apr , 04 2023

According to the 5G band standard of ITU, there are three 5G bands, the low band of 700MHz~3.8GHz, the middle band of 3.8GHz~24GHz and the high band of 24Hz~100GHz. When shielding 5G signal, the smart shield covers the low and middle frequency bands of 5G. In the middle frequency band, our country divides 4800 MHz~4960 MHz (abbreviated as 4.9G band) into China Mobile Radio and Television, so the q...