Author name: Tom

Design, installation and commissioning of jammer system: 1.Common problems before installation: 2.On-site inspection: Understanding the sensitivity of signal reception is essential for designing and using jammers. In the absence of specialized survey equipment, collect information about nearby base stations, estimate their distances, identify network providers (China Mobile, China Unicom, CDMA, 3G, etc.), and determine the […]

In our daily lives, some people have a strong desire to keep their precise location private, so they buy basic cell phone signal jammers online to block location tracking. But can we fully trust these types of jammers? 1.Privacy issues The price of a cell phone jammer usually indicates its main function. If you are

Can the vehicle-mounted wireless signal jammer achieve long-distance wireless remote control? When a high-power wireless signal jammer is modified and integrated into a vehicle, it becomes a special device that can be used as a carrier, quickly transported, deployed and used. Users familiar with the device know that the host of the wireless signal jammer

Will the full-band signal jammer interfere with the base station? The full-band signal jammer is a commonly used device that can generate interference signals to shield communication signals. However, it will also bring some interference effects to the surrounding mobile operator base stations. When using a low-power jammer, its transmission power is relatively small, which

Can the signal jammer in the exam room remain effective after penetrating the wall? When preparing for important exams such as the high school entrance examination, schools usually take measures to ensure the integrity of the exam environment and prevent cheating by mobile phone. One of the effective ways is to use a signal jammer

What are the advantages of our mobile phone signal blocker compared with ordinary signal blocking devices? With the advancement of technology, mobile phones have become an indispensable part of our lives. However, the widespread use of mobile phones has also caused people to worry about the need for mobile phone signal blocking. In order to

Ensure effective signal blocking using power amplifiers and specialized equipment In our increasingly digital world, technology plays a vital role in our daily lives. From mobile phones and computers to IoT devices and access control systems, wireless signals are essential for seamless communication. However, these signals are not always free from interference, which can cause

How does a wireless intercom system work? Are you familiar with the concept of a wireless intercom system? If not, let me explain how it works. In today’s Internet society, various systems have emerged, and the wireless intercom system is one of them. However, not everyone knows how it works. Please allow me to explain

In recent years, the popularity of drone technology has led to the rise of consumer drones, attracting drone enthusiasts from all over the world. However, the growing popularity of drones has also raised safety issues, such as unauthorized and potentially dangerous flights. To effectively address this issue, the development of anti-drone jammers has become a

The effective range of jammers can vary, and this is an important consideration for customers looking to purchase these devices. The range depends on several factors, such as the power of the jammer and the type of device being jammed. Different jammers have different restricted areas, depending on their power output. Generally, jammers with higher

Is there a wireless signal jammer that can be controlled by mobile phone software? After purchasing and installing a wireless signal jammer, customers often have specific requirements for its on/off function and seek alternatives to traditional hardware switches. So is there a wireless signal jammer that can be controlled by mobile phone software? From the

Can the car signal jammer antenna be installed in the car? Some customers have purchased a high-power signal jammer and want to install it in the car, but because it needs to be used concealed, it cannot be installed outside the car or on the roof. So, can the car signal jammer antenna be installed

Do you understand the importance of anti-UAV jamming system? With the rapid development of science and technology, UAV technology has become more mature and widely used in various fields. However, the proliferation of UAVs has also brought about safety hazards and interference problems. In order to meet these challenges, anti-UAV jamming system has become an

Why should 5G mobile phone signal jammers be used with caution? The use of 5G mobile phone signal jammers requires careful consideration for many reasons. These jammers create invisible barriers that divide society and may lead to information islands within cities. Without proper supervision, misuse of jammers can disrupt communications and connectivity. Therefore, it is

If you have selected our cell phone signal jammer and the matching power adapter, please follow the steps below to install it. Cell phone signal jammer installation steps: Step 1: Open the box and check if all parts are complete (1 host, 8 antennas, 1 adapter, 1 bracket). Step 2: Take out the host and

The advantages of vehicle-mounted shielding devices over portable frequency jammers are as follows: 1.Modular installation: Vehicle-mounted jammer devices can be equipped with multiple modules, allowing strong signal frequency bands to be subdivided into smaller parts. This allows the use of narrower frequency bands to enhance the effectiveness of the shielding device. In most cases, the

With the widespread use of smartphones and their potential to transmit information, the fairness of examinations has been seriously affected. To solve this problem, Cell Phone Jammers have been introduced in examination rooms. These signal jammers are designed to block signals from smart devices, preventing them from connecting to external networks, thereby safeguarding the integrity

Transmission and coverage of 5G signal jammers with directional antennas In 5G signal jammers, the choice of antenna is generally between omnidirectional and directional antennas, depending on the specific application environment or usage scenario. While customers can easily grasp the coverage and signal transmission direction of omnidirectional antennas, they often have questions about the signal

What is the purpose of a car GPS signal jammer? Car GPS signal jammers have important uses for some people. For example, in a situation where a car is temporarily mortgaged and control is transferred to a borrower after payment, the borrower can use jamming devices to prevent the original owner from quietly reclaiming the

The jammer’s interference range is determined by the signal capacity Do you need a wireless jammer that can block all mobile and WiFi signals at the same time? Look no further, because this 3G/4G/WiFi/Cellphone jammer is the perfect solution. Combining cutting-edge technology with advanced design, this 4G cell phone jammer offers the latest features and

Radio Communication Protocol Cracking in Drone Countermeasures The emergence of drones has brought major changes to society. They are used in various fields such as aerial photography, commercial performances, leisure and entertainment, and have enriched the service content of the consumer industry. However, as drones develop, they also bring potential risks to public safety. Problems

College entrance exam candidates cheat using “high-tech communication equipment” Nowadays, mobile phones have become an indispensable part of our lives, comparable to the internal organs of the human body. The rapid development of the communications industry has benefited from the large-scale construction of mobile phone base stations across the country. Mobile phones can receive signals

Do factory manual assembly line workshops need to install mobile phone signal blockers? In today’s manufacturing industry, many large processing companies adopt assembly line production methods, which involve many workers participating in the production process, and each worker is responsible for completing specific production or assembly tasks at a designated workstation. The assembly line operation

How to use the signal jammer, is it harmful to the human body? 1.Why do some mobile phones still display the signal indication when the signal jammer is turned on? Answer: This is just an illusion. In fact, the mobile phone cannot communicate during this period. If you try to make a call, you will

In recent years, educational institutions around the world have installed cell phone jammers in examination halls to prevent cheating in college entrance examinations. However, on May 24, an article claiming that cell phone jammers are harmful to the human body was widely circulated and reprinted by the media. The Ministry of Education officially stated that

Classification of electromagnetic shielding and the principle of conductive fabrics First, let’s discuss the classification of electromagnetic shielding according to the shielding principle: 1.Electric field shielding: This method aims to prevent capacitive coupling between electronic devices or equipment. It involves wrapping the device or equipment with a metal shield made of a good conductor and

Important Considerations for Using and Storing Signal Jammers in the Exam Room Using signal jammers in the exam room is a well-known practice that promotes fairness and equality in exams of all sizes. However, certain factors must be noted when using and storing these devices. Here are some specific guidelines to keep in mind: By

Does the GSM900 frequency band in the mobile phone signal blocker only block 2G signals? Many mobile phone signal blockers will indicate the GSM900 frequency band logo in the product introduction, indicating that the signal of the GSM900 frequency band can be blocked. This makes consumers begin to doubt whether the GSM900 frequency band refers

Factors Affecting Cell Phone Jammer Performance: Macro, Micro, and Pico When installing and using a cell phone jammer, customers may find that the jamming effect is less than ideal. A key factor to consider is the distance of the base station from the site. However, it is important to understand that not all base stations

In the information society, wireless communication technology is everywhere, including mobile phone calls, Bluetooth devices, WiFi networks, etc. While these technologies bring convenience, they also bring risks to information security and privacy. In response to these problems, JAMMERSIGNAL has launched a new portable frequency jammer to use technical means to ensure information security. 1.Portable design,

What is the effective range of a recording jammer? Recording jammers are often used in corporate offices, important conference rooms, and government agencies to prevent the unauthorized use of mobile phones or other recording devices to record confidential meetings and sensitive information. These jammers interfere with the recording function of such devices. How do recording

What to do if your phone is being monitored: Experts suggest detection and countermeasures 1.Microphone monitoring One of the most basic methods of mobile phone monitoring is to install a micro-monitoring device. The analog signal transmitted during a wired phone call can easily be intercepted and converted back into voice. On the other hand, mobile

Prisons, detention centers are places where detainees are kept, and it is crucial to strengthen internal management by installing cell phone jammer systems to prevent unauthorized communication with the outside world. However, installing such systems in these regulated facilities comes with certain difficulties. Let’s explore these challenges: 1.Strict security measures: Unlike government agencies or businesses,

Conductive sponge is an electronic material widely used in the electronics industry. For those who are not familiar with this industry, this material may be unfamiliar. Today, I will introduce its uses and main application areas in detail. 1.Production method and advantages Conductive sponge is mainly composed of polymer composite materials and is made by

How to choose the right mobile phone signal jammer: 1.Frequency band coverage: Determine which signals you want to block before purchasing. Standard mobile phone signals (2G, 3G, 4G) can be selectively blocked. If you only need to block 2G or 3G, or only need to block 3G or 4G, you can adjust the device accordingly.

Wireless jamming technology is growing in popularity, but it can be detected and its use has consequences. There are various types of jamming devices available: If you suspect your phone is being jammed and want to gather evidence before taking action, you can easily check if your calls and texts are working properly. WiFi jammers:

In classrooms, conferences and other places, mobile phone signal jammers can be seen everywhere, and people are worried that their radiation is high and has an impact on human and mental health. But this worry is actually unnecessary. Cell Phone Jammers are generally low-power devices, generally around ten watts, and will not be used continuously

With the rapid development of wireless communication technology, the demand for seamless communication continues to increase. However, signal interference has also become a common problem, especially in specific situations such as hospitals, airports. In such cases, it is essential to use full-band signal jammers to ensure communication safety and order. This article provides a guide

With the popularity of 5G technology, people’s concerns about communication privacy have also arisen. In today’s society, it is crucial to ensure the security of communications, especially in large conferences involving sensitive information and confidential discussions. In order to ensure the confidentiality and reliability of communications during such events, effective signal blocking solutions must be

In today’s fast-paced, information-spreading society, there are situations where it is necessary to block or restrict the transmission of information to prevent significant losses or panic. One such situation is in various types of exams, where the use of wireless electronic devices to cheat undermines the principle of fairness in assessment. Let’s explore some of

Can signal jammers effectively solve the problem of cheating in the college entrance examination? In recent years, the problem of cheating in the college entrance examination has been a problem. Some students use traditional cheating methods, such as plagiarism and stealing answers, and some students have begun to use high-tech cheating methods such as signal

Will the signal of a cell phone signal jammer interfere with ZigBee signals? To determine whether a cell phone signal jammer will interfere with ZigBee signals, it is important to understand what a ZigBee signal is. ZigBee technology is a wireless communication technology designed for short-range and low-speed applications. In the past, it was also

Does the signal jammer in the examination room have a blacklist recognition function? Signal jammers are commonly installed in examination rooms to prevent cheating in various examinations. These devices can effectively block the communication signals of mobile phones and electronic communication products to ensure that they cannot be used during the examination. However, some customers

Does the signal blocker in the examination room have radiation? As the college entrance examination is approaching, the use of signal blockers in the examination room has become an important guarantee for fair competition among candidates. However, people have concerns and misunderstandings about the radiation of these devices. Some people worry that the signal blocker

The fundamental requirement for effective interference is the ability to detect drones. Due to the wide variety of drones, some emphasize high-altitude, high-speed stealth, and some emphasize low-altitude miniaturization, so there are also many types of early warning detection equipment in drone jamming systems. The first is the 8341 anti-drone detector that is equipped with

How to install a mobile phone signal shielding system on a specific floor without affecting other floors If you want to install a Cell Phone Jammer on a specific floor of a building while ensuring that it only affects your own room and does not interfere with the floors above and below, there are some

Will the presence of a base station near the examination room affect the effectiveness of the signal jammer? At the beginning of the new semester, the college entrance examination is approaching, and many educational institutions at designated examination sites have begun to purchase anti-cheating equipment including signal jammers and install them in the examination preparation

Understanding GPS Jammer Frequencies The main purpose of a GPS jammer is to block GPS tracking devices. How these devices work is explained in the article What are jammers?. If you are concerned about being tracked, you may want to use a GPS jammer to prevent others from using GPS trackers to monitor your whereabouts.

What gives people confidence in the effectiveness of a jammer? If you have ever been in a situation where a business meeting was interrupted by someone using their cell phone constantly, a movie was disturbed while watching a movie in a theater, or a noisy neighbor disturbed your sleep outside the wall, then you will

Room Jammers – A Clever Solution to Prevent Electromagnetic Leakage In today’s fast-paced digital economy, trade secrets have become an important asset for modern enterprises to gain a competitive advantage in the market. Protecting trade secrets not only protects the legitimate interests and advantages of enterprises, but also promotes a fair business environment and maintains

Can signal jammers penetrate walls and maintain their effectiveness? In preparation for important exams like the annual college entrance exam, many schools are actively equipping their exam rooms. This includes purchasing the necessary equipment to set up the exam room, ensure that it runs smoothly, and meet the core requirements of the exam. In response

Cell phone signal jammers are useful in a variety of situations. Their primary function is to disable cell phones, targeting common frequency bands such as 850 MHz, 900 MHz, 1800 MHz, and 1900 MHz. However, there are also smaller standards such as UMTS, CDMA2000, Nextel, TDMA, AMPS, and W-CDMA PCS. GSM jammers work by blocking

Mobile phones have become an indispensable communication tool in modern society. However, in some occasions and specific environments, the use of mobile phone signals may bring security risks and interference problems. To solve this problem, mobile phone signal jammers came into being. A Cell Phone Jammer is a device specifically designed to block, interrupt or

Installing signal jammers in an exam room requires careful consideration, taking into account factors such as the jammer’s coverage. The number of signal jammers required depends on various factors. Here’s how to determine the appropriate number of signal jammers for an exam room: 1.Consider the power of the signal jammer: Evaluate the power output of

Background: The counterattack equipment used to mitigate the effects of drone jammers usually consists of a strike transmitter module, a transmitting antenna, and battery management and control circuits. The effectiveness of the counterattack, especially the distance at which it can be performed, depends on the strike transmitter module and the transmitting antenna. The output power

Can a cell phone signal jammer penetrate a wall? Many people are asking whether a cell phone jammer can penetrate a wall, and this question requires several factors to be considered. First, let’s look at the jammer itself. The function of the jammer is to emit a special radio frequency signal to interfere with the

Cell phone signal jammers commonly used in exam rooms or conference rooms often lack power adjustment functions. But some customers specifically require jammers to have power adjustment functions to avoid excessive signal interference in irrelevant areas. So the question is: Does the cell phone signal jammer with power adjustment function adjust the overall transmission power

Determine the installation location of the Cell Phone Jammers 1.Single space: For small and medium-sized conference rooms with transparent internal environment, the selection of signal jammer installation points is relatively simple, and usually only a few points are needed to achieve the ideal shielding effect. 2.100-300 square meters: In a conference room of 100-300 square

Signal interference problems often cause trouble in the field of electronic equipment, especially in power amplifier modules, where such interference can disrupt the normal operation of the equipment. In view of the importance of professional technology in effectively solving signal interference in power amplifier modules, this article will comprehensively discuss this issue. Common problems with

When purchasing a signal jammer, customers often have some questions about how it can be used. These questions include concerns about the device’s effects on human health, the heat it may generate when used for long periods of time, and the potential for interference with other devices. While the general understanding of mobile phone signal

Which electronic jammer is suitable for disrupting children’s online games at home? Recently, I received inquiries from some parents who are worried that their children spend too much time playing online games at home. They are looking for a suitable electronic jammer to solve this problem. The purpose is clear: to stop children from becoming

Can a mobile phone signal blocker block GPS positioning signals at the same time? Unless the customer specifically requests it, most low-power mobile phone signal blockers do not include the GPS band by default when they leave the factory. However, if the customer requires blocking the mobile phone signal while blocking the GPS positioning signal

Which scenarios should be avoided when using wireless signal jammers? In recent years, wireless signal jammers have been used more and more in various scenarios, and common scenarios include examination rooms, confidentiality agencies, detention centers, prisons and other places that require supervision and control. Generally speaking, it is legal to use wireless signal jammers in

When installing and setting up a cell phone signal jammer, it is critical to determine whether all nearby cell phone signals are effectively blocked. Engineers need to address and analyze these issues during the construction phase. When signal gaps occur, some cell phone signals are not completely blocked despite the interference of the jammer, and

Portable frequency jammers can be divided into many forms according to their appearance, including tow-box, backpack, handheld and suitcase RF jammers. These classifications reflect the portability of the device in different application scenarios. The tow-box frequency jammer adopts a trolley case structure design and uses rollers for easy transportation. The backpack frequency jammer is similar

There are multiple ways to block Wi-Fi signals. Here are three common methods introduced by WiFi jammer manufacturers: 1) Brute force attack: This method involves generating interference across the entire frequency band of the target signal (such as the 5G band). By increasing the interference level, the signal-to-noise ratio decreases. When the signal-to-noise ratio is

Living in a small apartment, it’s annoying to have noisy neighbors who constantly play video games on their Wi-Fi network. If you want to block their signal without causing harm or spending a fortune, there are several effective and affordable methods to try. Here are some ways to get rid of your neighbor’s annoying Wi-Fi

What is the maximum shielding distance of a mobile phone signal jammer? Many users who buy and use mobile phone signal jammers often ask about the shielding distance, hoping that one or two devices can cover a larger area, even in an open area. This raises a question: Is there an upper limit to the

How to choose and install a cell phone signal jammer in a grand theater? Installing a cell phone signal jammer in a grand theater is essential to ensure uninterrupted performances and prevent mobile phones and other communication devices from interfering with the order of the performances. Several aspects should be considered when selecting and installing

Will a cell phone signal blocker disable the car remote key? During the college entrance examination, there were reports that someone was using a cell phone signal blocker near the examination room. Some car owners and 4S shop staff received information that these blockers would interfere with the vehicle data signal, causing the car door

Can the anti-cheating jammer used in the college entrance examination block 5G signals? Yes, a good jammer can do this. JAMMERSIGNAL Electronics has professional personnel and factories to develop a new type of shielding device that can effectively block 5G signals. Best-selling WIFI jammers and 5G jammers in Europe and America. The main features of

Power level and use environment of wireless signal jammer Wireless signal jammers can be divided into three power levels according to the transmission power. The first level is low power, and the transmission power of each shielding module is below 2-3W; the second level is medium power, and the transmission power of each module is

Why does the shielding range of signal jammers vary? When purchasing a signal jammer, customers often ask about its shielding range, but the shielding range of a signal jammer is not fixed. When the signal jammer is working, it will scan the channel from the low-end frequency to the high-end frequency at a constant speed.

With the advancement of science and technology, signal shielding equipment amplifier modules are widely used in various fields as an effective tool for information control. These modules have strong shielding capabilities, which can effectively block the transmission of different signals and create a safe and quiet environment under different environments. This article will introduce the

Why do you need a GSM/CDMA/3G/4G/5G jammer? GSM, CDMA, 3G, 4G, and 5G are various frequency bands used for cellular phone networks and mobile communications around the world. While these technologies have greatly improved our lives, they can also be abused for malicious purposes. Therefore, a GSM/CDMA/3G/4G/5G jammer is needed to counteract these risks. By

Will full-band jammers affect signals on other floors? When considering installing a full-band jammer in an office building or similar environment, you may be concerned about its potential impact on other floors. It is important to understand how signal jammers work and their impact. During operation, mobile phones transmit data by using radio waves within

Why should you consider using a WiFi and Bluetooth signal jammer? With the increasing prevalence of WiFi and Bluetooth technology in our daily lives, including wireless networks and the internet, there are also potential risks associated with using them. Government agencies and other malicious entities can use these technologies to violate your privacy, such as

What are the different ways to implement a WiFi jammer? The implementation of a WiFi jammer depends on factors such as the installation location and area. In China, the main WiFi frequency bands used are WiFi 2.4G and WiFi 5G, which are further divided into WiFi 5.1G and WiFi 5.8G. To make a WiFi jammer,

Will full-band jammers interfere with base stations? The widespread use of full-band jammers does cause interference to mobile operator base stations. When the number of Cell Phone Jammers is small and the transmission distance is limited, the interference effect on the base station is still tolerable, but when customers purchase and use high-power jammers, and

When choosing a cell phone signal jammer, cost-effectiveness becomes an important factor to consider. Let’s look at the cost-effectiveness of a cell phone signal jammer from four perspectives, as introduced by the editors of JAMMERSIGNAL, a well-known cell phone jammer manufacturer: Factor 1: Effective Shielding Effective shielding means there are no blind spots or gaps

We know that there are many occasions in life where it is extremely inappropriate to use mobile phones, such as exams and meetings. In addition to collecting mobile phones in advance, you also need to use a full-band jammer with stable performance to effectively block mobile phone signals and Wi-Fi signals in specific areas. So,

When building a mobile phone signal shielding system, the power supply of each mobile phone signal shield is a key link in the project. As the project contractor, there have been doubts and disagreements about whether the power supply of the entire system should be AC ​​or DC. Here, we aim to provide explanations and

Everyone is already familiar with mobile phone signal amplifiers, but recently some netizens asked me about the principle of signal amplification. Specifically, how does the signal amplifier achieve bidirectional amplification? Today I will give you a brief explanation to help you understand this concept. You can take some time to remember the key points! 1.What

Before we proceed, it is crucial to understand the concept of cell phone signal jammers. While cell phones provide us with convenience, not all users know when to avoid talking. In some cases, it is necessary to use cell phone signal jammers to maintain a quiet environment. Places such as churches, libraries, conference rooms, and

In this era of rampant online fraud, the editor has compiled the top ten mobile phone security risks to improve your awareness of prevention and help you avoid unnecessary losses. 1.Phishing: Phishing refers to criminals sending fraudulent spam or text messages, instant messages, etc., impersonating well-known institutions such as banks, to trick recipients into revealing

With the advancement of social science and technology, information digitization has become an inevitable trend. As a symbol of the digital age, mobile phones have become an indispensable tool in people’s daily life and work. However, in certain specific places, such as prisons, mobile phones are strictly prohibited for safety and information leakage. For this

In today’s era, ensuring communication security is of vital importance. The advancement of communication technology and the widespread use of wireless signals have brought potential risks to communication security. In some important meetings or discussions that require confidentiality, preventing eavesdropping becomes necessary. Many people consider installing wireless signal jammers to counter eavesdropping attempts. However, deploying

What are the benefits of using a mobile phone signal blocker in a conference room? Why must it be used during a meeting? Mobile phones are open electronic communication systems that transmit voice and data information. If there is a corresponding receiving device, call information of specific time, place, and person can be intercepted. Therefore,

Typically, companies use cell phone signal jammers in conference rooms to block cell phone signals and prevent interference during important discussions. These conference rooms often only have equipment that blocks cell phone signals, and no other equipment that blocks wireless bands. But a dedicated confidential conference room may require a cell phone signal jammer that

Are you considering buying a jammer but feel unsure about it? Many people have heard of cell phone jammers and understand their basic functions, but they may lack a deeper understanding of the device and have trouble choosing the right one. To help you better, let us explain the specifications of a jammer. First, the

Recently, the Chengdu Radio Administration Bureau received a complaint from a telecom operator about signal interference from a communication base station, and quickly set up a joint law enforcement team to rush to the scene to investigate. The investigation found that many companies used mobile phone signal blockers in violation of regulations, and the relevant

A full-band signal jammer is a wireless device that uses radio frequency transmission to interfere with mobile phone signals, but the interference range will vary greatly in different environments. This is because the signal emitted by the jammer will attenuate when encountering obstacles, and the attenuation degree of different obstacles is different. For example, when

The handheld drone detection and neutralization device is an upgraded and improved version of the drone jammer. The device has the function of detecting drone signals and transmitting wireless interference signals at the same time, forcing the drone to hover, return or land on the spot. The drone detection and neutralization integrated device currently on

Judging from the information of various mobile phone signal jammer manufacturers, it is rare to see products that claim to have an effective shielding distance of more than 1000 meters. When we consult customers, we often receive requests to purchase or customize mobile phone signal jammers, and clearly require an effective shielding distance of 1000

Pilots rely on the remote control to establish a connection with the drone and control the flight path. However, the radio signal between the remote control and the drone can be intentionally disrupted, which is commonly referred to as jamming. Frequencies commonly used to jam drones include GPS and various WiFi bands (such as WiFi

Handheld jammers are not easily detected by others due to their design and operating characteristics. Here are a few reasons why handheld jammers are undetectable: 1.Size and portability: Handheld jammers are usually compact and easy to carry, allowing for concealed use. They can be neatly concealed in a pocket, bag, or even held in the

Are you often bothered by the ringing of phones around you? Are you frustrated when someone answers the phone and talks loudly while you’re watching a movie in a theater? For safety reasons, gas stations post signs prohibiting the use of mobile phones, but some people ignore these warnings. Fortunately, there is a solution to

Many people wonder whether using a mobile phone signal jammer will cause damage to the mobile phone. Today, JAMMERSIGNAL, a mobile phone signal jammer manufacturer, will answer this question for you. The working principle of the cell phone jammer is to transmit an interference signal with the same frequency as the mobile phone receiving frequency,

When choosing a cell phone signal jammer for a school exam room, there are several factors to consider: 1.Consider coverage: Evaluate the specific location within the school where the jammer will be used. For example, if it is in a student dormitory, it may be appropriate to install the jammer in the corridor to cover

When customers consult about mobile phone shielding devices, they often mention a common problem, that is, they have tried or purchased 5G jammer devices of other brands, but found that the shielding distance of these devices is significantly shorter, and sometimes they cannot even shield certain 5G frequency bands. This makes people wonder, why does