We often visit shopping malls, and clothing anti-theft alarm doors can basically be seen at the door of the mall. When goods with anti-theft buckles pass by the device, the clothing alarm will make a beeping sound. There are also people who have made trouble because of this kind of alarm. For example, when trying on clothes, when you go out to answer the phone, the alarm keeps calling. People around you think you are a clothes thief, and when the staff rushed to pick up that one. After the small anti-theft buckle is removed from the clothes, you can pass the inspection area smoothly.

Such anti-theft equipment is not only used in some clothing stores, but also such anti-theft doors are installed in large supermarkets, clothing stores, optical shops, department stores, casinos and other places. Mainly used to protect property and reduce the theft rate of items. So how does this anti-theft alarm door work?

Induction anti-theft tag to achieve alarm

At present, an alarm device that can sense anti-theft tags is installed at the door of clothing stores, which is what we often call clothing anti-theft devices. Store staff install matching anti-theft buckles (that is, hard tags) on clothing in the store. The reason why clothing anti-theft buckles can be used The anti-theft function is because it has a magnetic coil inside. When the clothing anti-theft buckle enters the clothing anti-theft device protection area, the clothing anti-theft device starts to alarm after it senses the magnetism.

The buckle of the anti-theft buckle means that there are two pairs of small grooves on the rod of the nail. When the nail is inserted from the bottom of the anti-theft buckle, the small steel balls in the buckle will slide to the position of the nail groove. The upper iron column rings firmly clamp them in the groove under the pressure of the top spring. This kind of anti-theft buckle generally requires the use of a professional unlocking device to open it.

What to do if the anti-theft alarm door fails?

Anti-theft doors are installed at the cashiers at the exits of supermarkets, and a number of anti-theft antennas are arranged vertically. When consumers pass by with items that have not been scanned, the didi alarm will sound. Businesses who have used anti-theft doors know that the anti-theft doors in supermarkets will also play tricks when it is critical, and cannot normally or blindly call the police. What should I do in such a situation?

Check for interference signals. Whether it is a supermarket or a shopping mall, there will be a certain blind area due to environmental influences. If there is continuous strong radio interference signals around, the device may continue to sound or stop working, so it is necessary to check whether there is large-scale power consumption within 20 meters. The device starts frequently.

Troubleshoot equipment issues. If the warning light does not flash and there is no alarm sound when detecting the label, first check whether the wiring of the warning light and buzzer is good, and whether the warning light and buzzer themselves are damaged. Whether the antenna wiring port is loose or falling off, if not, check the ALARM indicator on the printed board. “On” indicates that the system has alarmed, but there is no alarm output. At this time, some circuit failures should be considered.

Check label compatibility. The working frequency of the tag is 8.2MHZ and 58KHZ. 8.2MHZ corresponds to the radio frequency anti-theft system, and 58KHZ is used in conjunction with the acousto-magnetic anti-theft system. Different working frequencies will affect the normal operation of the device. It is especially important to note that the frequency of the tag should be used corresponding to the frequency of the detector. Many people mistakenly think that the anti-theft tag is universal. This is wrong.