How to choose a home burglar alarm

Product legality

First of all, we must pay attention to whether the products have been approved by the relevant state departments for production. The national industry and commerce departments shall have clear regulations on the scope of business of security product manufacturing enterprises; all local authorities shall issue production licenses for security products, and issue sales licenses for security product sales associations; and national security information for security products that are alerted through telephone lines. The Ministry of Industry will also issue telecommunications equipment access licenses. For products that have both the above license (business license) and the three licenses (security product production license, security product sales license, and telecommunications equipment network license), users can be included in the scope of purchase. Because the relevant authorities of the state will verify the qualifications of the production (sales) factory/business in accordance with the strict approval procedures in the process of issuing the above licenses, in particular, it is required to conduct random sampling in the products produced by the factory/commercial manufacturers. Submit to the national legal inspection department: Inspection of the product network inspection conducted by the Ministry of Information Industry and the National Telephone Quality Inspection Center of the Ministry of Information Industry. This process is a rigorous test of product quality. It is possible to obtain certification conditions through the tested products. For imported security products, only through the above-mentioned testers can they have the basic conditions for obtaining licenses for sales (telecom equipment and network access).

The basic composition of home burglar alarm

Home burglar alarms are usually composed of an alarm host, various types of defense probes, and user operation components (keyboards, remote controllers, etc.). Can be divided into three major parts from the function: detection part, on-site processing part, follow-up part of the detection part of the site processing part of the follow-up part of the various types of defense probe (gate magnetic, passive infrared detectors, active infrared detectors, emergency buttons, smoke Sense / fire detector, flammable gas probe) alarm host (site alarm) alarm host and transmission media (phone line transmission: dial the default phone with voice alarm, (dedicated data line transmission: computer duty processing)

Product usability

The use of home burglar alarms should be based on multiple factors such as home area, architectural features, property value, and the surrounding environment, but there are several general reference guidelines: Wired has the advantages of reliable communication, strong anti-interference ability, and low device cost. Applicable to newly built buildings that can be reserved in the wall; however, they have poor manoeuvrability and inconvenience to meet the changing requirements of users and products. It is difficult and costly to maintain and replace reserved cables. Wireless methods can be avoided. The connection between the probe and the host affects the interior decoration. It has the advantages of flexibility and simplicity, but it also has the disadvantages of being susceptible to a variety of external factors and relatively high device costs. The means to prevent the thief from entering the door is mature, that is, the use of a reed switch/magnet pair to detect the opening of the door. However, attention should be paid to two different alarm triggering modes: instant alarm and delayed alarm. The former can immediately generate on-site alarms, which can immediately act as a deterrent to intruders, but if the user does not perform disarming operations before opening the door, It will generate false alarms and cause harassment to the user and his neighbours. The latter kind of delay triggering alarm mode will sound a prompt when the door is open, prompting the user who forgets to disarm the user to disarm the operation in time. If the host computer does not receive the disarm signal within a certain time, the host computer will alarm again. Obviously, the latter method is more practical. The most primitive way to submit is to use an on-site siren to warn people in the vicinity; the more popular way of submission is that the control panel can automatically dial the user's preset telephone number, and after playing, the user can play the pre-recorded description of the touch alarm. Voice; as a commercial housing residential community or community defense application, the alarm host is required to have a network alarm function. The traditional way to achieve networked alarms is to use computers to receive data information from dedicated lines or telephone lines. In contrast, using telephone lines to transmit data information has obvious advantages such as high line reliability, maintenance-free, and easy expansion. However, the use of computer to receive the data information of the telephone line, but also its shortcomings: the ordinary PC is difficult to bear the continuous work day and night, such as the use of industrial control microcomputer can adapt to continuous operation, but also make the product prices soar 3 " 5 times, resulting in the waste of funds; the use of microcomputers requires high skills for operators, resulting in a waste of human resources; the use of microcomputers is also always faced with fatal defects such as virus invasion, data loss, and crash restart. An important indicator for evaluating the performance of alarms. Hosts with networked alarms should be able to distinguish between alarms (eg, intrusions, emergency, fire alarms, etc.), police districts (doors, windows, room parts, etc.).Practicality and Standards of Certain Product Functions Conflicts (such as not using a power supply), some product features conflict with defense purposes (such as remote control disarming).