Anti-theft has always been a commonplace topic, and everyone has been doing it. Just as time goes by, the anti-theft methods are becoming more and more different. From the most primitive anti-theft to the high-tech anti-theft, the security industry often talks about the anti-theft from human defense to anti-theft. It has always been a common topic. Always doing it. Only with the passage of time, the anti-theft methods are becoming more and more different, from the most primitive anti-theft to the high-tech anti-theft, the security industry often said from the human defense to the technical defense!
The earliest burglar alarms should be dogs, especially in rural areas where almost every household has dogs, but dogs biting people can easily lead to rabies, and such watchdogs are becoming less and less.
With the development of the electronic market in recent years, even the rural anti-theft does not rely on dogs, and switched to a cheap on-site alarm product, commonly known as electronic dog. Most people can accept it. However, the only downside of the on-site alarm is that it can only scare away the thief on the spot. You can't call the owner. If you run into a big or a good step, it only takes a short time to destroy the electronic dog. It is still useless.
Following the increasing popularity of mobile phones, the price of products such as GSM smart burglar alarms in the security industry is becoming more and more popular. GSM intelligent burglar alarm can mainly trigger the alarm when the detector is detected by infrared, door magnet and other detectors. The host can automatically dial the set phone. The appearance of this function greatly meets the needs of users. In addition to the GSM burglar alarm, the current 3G video burglar alarm can also realize the function of remote real-time viewing. The office workers are not at home, they are on a business trip or want to see the situation of the elderly and children at home, pick up the phone at any time. You can look at the situation at home, and you can save money and worry. This type of burglar alarm uses the GSM mobile network for signal transmission. Once a theft or emergency occurs in the home, the intelligent alarm will immediately dial the alarm to inform the user to take timely measures, then the user can immediately I saw what happened at the scene.
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Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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