Since the early 1990s, wireless alarm systems have been continuously improved and have become more and more popular, especially in private and professional installations. Many manufacturers spend part of their profits on research and development to significantly modernize wireless alarm systems. However, compared with 100% wired solutions, there are still many prejudices that limit wireless alarm systems to low-quality gadgets. On the contrary, some people think that the cable is simply outdated, even tacky, and can only judge broadcasting…what is this? The wireless alarm system has made great progress in autonomy, reliability, and especially safety.
In the United States, some well-known newspapers reported major vulnerabilities related to the alarm system installed by certain companies that specialize in installing alarm devices. When the remote control is activated, clearly displaying the user password will cause a lot of interference, and even lack of encryption during transmission. Given these types of products, the 100% cable routing argument still has a bright future…though…I will always remember to extract everything from 2001 to the alarm system of world fame in the correct order. Use a simple small EPROM reader to retrieve programming/engineering code at a price of €45.00…complete programming with full visibility, user and engineer access to the code. Was rest assured that many manufacturers with a long history, such as Paradox, Visonic, Risco, DSC, Videofied or Honeywell (non-exhaustive list), have (very) advanced wireless alarm systems in front-line technology, and anti-jamming alarm systems do not have to envy wired ones Peer. Wireless alarm solutions focus on safety, prevent interference with attempts, and of course (very) long-term. See the article: Comparison of wireless alarms. Wireless alarm solutions focus on safety, prevent interference from attempts, and of course (very) long-term. See the article: Comparison of wireless alarms. Wireless alarm solutions focus on safety, prevent interference from attempts, and of course (very) long-term. See the article: Comparison of wireless alarms.
Alarm interference: remind you of the basic principles of operating a wireless “radio” alarm system
The wireless security system consists of transmitters (detectors, remote controls, keyboards, alarms, photoelectric detectors, etc.) assigned to one or more so-called “RX” receivers abbreviated as “TX”. The alert center that receives information is the “RX” receiver. The purpose is to concentrate all signals from the peripheral devices of the alarm system. Each device that makes up the alarm system transmits radio frequency radio communication signals to the control panel through printed or separate spiral or monopole antennas (depending on the alarm manufacturer). When an event occurs (open area, closed area, debugging, ongoing alarm, sabotage, error…), the sending device will convert the digital signal into an RF signal and then send it to the control panel.
There are more than 100 years of mature technology in many fields. In the field of alarm systems, the first wireless system seemed to become more and more popular in the 1980s. There is no time for “anti-portable jammer” alarms. Frequency jammers are almost always used for different purposes than today. Although it has existed for many years, some manufacturers do not always seem to have perfect commands for high-frequency RF transmission. Sometimes this is dangerous and may make it easy to stop the wireless alarm system. A few years ago, I had the opportunity to discover an encrypted wireless alarm system that can be eliminated by a simple… walkie-talkie! A heresy unfortunately reflects this sad reality. But please note that this is a low-cost alarm system, far from the standards of security equipment manufacturers, and now more attention is paid to the vulnerabilities of their products. Although this technology has a long history, it is not uncommon to find products that benefit from numerous vulnerabilities on the Internet or in stores. In this document dealing with wireless alarm system failures, we will investigate most security vulnerabilities. Discover products that are sold on the Internet or in stores and benefit from many vulnerabilities. In this document dealing with wireless alarm system failures, we will investigate most security vulnerabilities. Discover products that are sold on the Internet or in stores and benefit from many vulnerabilities. In this document dealing with wireless alarm system failures, we will investigate most security vulnerabilities.
The AFP for low-power devices managed by ARCEP perfectly lists the allocation of radio frequency bands in Appendix 7. The appendix is also available here-download appendix A7. France’s wireless alert system uses one or two radio frequency bands, depending on the manufacturer. To date, the most famous is the 433 MHz band (433,050 to 434,790 MHz) for private and professional applications, for example. A free band with the nickname “Junk Band”…rest assured that our neighbors across the canal will also benefit from their famous 418 MHz garbage band! The 433 MHz band is overloaded by (too many) a large number of different peripherals (wireless headsets, remote controls, weather stations, blinds, garage doors, etc.). Unfortunately, in urban areas, interference between adjacent devices is very common. Radio amateurs usually pose the greatest risk of interference. In fact, they are granted 430/440 MHz as free bands. The extremely high power of its antenna up to 100 watts or higher can severely damage the small 433 MHz transmitter and its 10 MW transmitter, which constitute the peripheral equipment of the wireless alarm.
The 868 MHz frequency band is between 868.6 MHz and 868.7 MHz. This frequency band is reserved for wireless security systems classified into “non-specific equipment” and “alarm” categories. Therefore, because the transmit power has better uniformity, the 868 MHz frequency band can overcome environmental interference. Theoretically, the frequency range of the 868 MHz band is lower than that of the 433 MHz band. Unfortunately, the 433 MHz wave has a larger range than the 868 MHz wave, which has a lower bit rate. In practice, the 868 MHz alarm system has the same performance in terms of range, and high-performance transceivers compensate for this to overcome this shortcoming. It should be pointed out that the most professional alarm system deserves its name. It only works at 868 MHz (Paradox, DSC, Bosch, Visonic, Honeywell, Risco, Videofied, etc.) or dual frequency (433 MHz-868 MHz). Serious and quality.
We believe that when purchasing an alarm system, choosing the 868 MHz alarm system is a basic privilege. However, switching to the 433 MHz alarm solution does not guarantee failures, malfunctions and various problems. (Sorry for this contradiction). On these two frequencies, wireless alarm jammers are entirely possible. Numerous 433 MHz wireless alarm systems can monitor many households without causing damage and without damage during the entire life cycle. In theory, the theory does not always accurately reflect reality. However, the 433 MHz band may still be more susceptible to interference. Some arguments in favor of 868 MHz are based on higher speeds than the 433 MHz frequency. Theoretically, the propagation speed of the 868 MHz wave is slightly faster.