The early prototype of the alarm system appeared in North America in the early twentieth century. At that time, it was just a simple alarm call box that reported to the nearby police station through a connection line. With the continuous innovation and development of technology, front-end detectors have derived many categories, which can be applied to different environments and different application requirements, such as anti-intrusion detectors, smoke detectors, gas detectors, water leak detectors, etc.; The communication method of the receiving host has gradually evolved from wires, telegraphs, telephone lines, GSM, and the Internet. The speed of communication is accelerating, and the distance of communication is no longer limited.

The modern home burglar alarm mainly refers to the anti-intrusion alarm system, which is composed of a front-end alarm detector and a back-end alarm host. The front-end anti-intrusion detector can be divided into indoor detectors and outdoor detections according to different application environments. According to the communication method, it can be divided into wired detectors and wireless detectors; in addition to maintaining timely radio frequency communication with the front-end detectors, the back-end alarm host has gradually realized further communication, that is, the alarm host receives the front After the radio frequency alarm signal of the detector, not only the alarm sound and light will be issued on the spot, but also the alarm information can be transmitted to more people or related organizations in time through telephone, text message, network, etc., thus achieving the effect of unified joint defense .

Regarding the anti-intrusion alarm detector at the front end of the anti-theft alarm system, whether it is domestic or foreign, the current market is still dominated by indoor detectors, such as indoor passive infrared detectors, door/window magnetic detectors, etc. The reason is that indoor alarm detectors have been developed for a longer time, the market is more mature, the technical threshold is relatively low, and there are more manufacturers and employees in the industry. However, the development trend of anti-intrusion alarm detectors should be gradually extended to the outside, and it is bound to be gradually replaced by outdoor anti-intrusion detectors for the following reasons:

One, the essence of the product

Since it is anti-theft, it is to prevent others from intruding. The alarm should warn others before they want to invade, instead of waiting for others to invade and then call the police. As far as the various types of indoor anti-intrusion detectors are concerned, when they send out an alarm, it means that the intruder has entered the home or has damaged the doors and windows, which not only increases the hidden dangers of indoor family members, but also causes economic losses. These are completely passable Use outdoor anti-intrusion detectors for evasion.

2. Technological breakthroughs

It is not an easy task to stabilize an intrusion prevention detector, but it is not impossible. The first thing that needs to be solved is the production process and raw materials; because the detector has to adapt to the harsh outdoor weather changes, such as high and low temperatures, wind and sun, etc., these require the selection of components and the production process of the outdoor detector during assembly. Have a super high standard. The second is the problem of false alarm rate; for the detector to work stably outdoors, many problems that cannot be encountered by indoor detectors need to be solved, such as passive infrared detectors. Its working principle is to detect moving objects with temperature, which is so complicated outdoors. How to reduce the false alarm rate is the first and most important problem for many manufacturers to solve under the environment. Only through long-term and a large number of actual tests in conventional and extreme environments, and then solve the technical problems one by one according to the test results. And to determine the final technical plan, some professional manufacturers who have been engaged in the security alarm industry for a long time have broken through the technical bottleneck and are already in quantitative production. The third is the problem of wireless transmission distance and signal interference; some professional security manufacturers have adopted frequency-hopping wireless signal transmission technology, and the wireless signal it sends is multi-channel, even if one of the channels is interfered, there are several others. This channel can transmit the alarm signal to the receiving host timely and stably; and its wireless transmission distance is longer, and its penetration ability is better.

Three, high cost performance

In order for a home anti-theft alarm to truly enter an ordinary home, it must meet three prerequisites: it looks good, the price is affordable, and the operation is simple. At present, some outdoor anti-intrusion detectors appearing on the market are really eye-catching; not only the appearance design is very modern and stylish, the function is powerful and the operation is simple, and more importantly, the solar power technology that meets the outdoor application is added, which is not only energy-saving. It is environmentally friendly, and it also improves the overall cost-effectiveness of outdoor detectors. There is no need to replace batteries frequently, and indoor activities will not be affected.