FAQ and answers about EAS anti-shoplifting systems
The most frequently asked questions by customers about EAS supermarket anti-theft devices and professional answers
Before choosing a supermarket anti-theft device, everyone has many questions. Here are some frequently asked questions by customers, which we will answer one by one for everyone! Hope it can be helpful to everyone!
1. What is the core function of an EAS supermarket anti-theft device? Is it necessary to install?
EAS anti-theft devices prevent goods from being stolen by detecting undemagnetized electronic tags (soft labels and hard labels). According to domestic data, the annual theft amount in supermarkets once exceeded 80 billion yuan. After installation, the theft rate can be reduced by more than 50%, which is particularly necessary for high-loss goods such as cosmetics and milk powder.
2. How do anti-theft devices in supermarkets work?
The anti-theft device activates the sensing element inside the undemagnetized anti-theft label (soft label or hard tag by emitting an electromagnetic field of a specific frequency (such as 58kHz AM acoustic magnetic system or 8.2mhz RF radio frequency system), triggering an alarm. Goods that require normal payment need to be demagnetized or unlocked by a decoder
3. What are the differences between acoustic magnetic (AM) and radio frequency (RF) anti-theft devices?
① Acoustic-magnetic (AM) : It adopts a 58kHz frequency, with a detection rate of ≥98%, low false alarm rate and strong anti-interference ability.
② Radio frequency (RF) : It has a relatively low cost, but is easily interfered with by metal items and has a relatively high false alarm rate.
4. How to choose between soft labels and hard labels?
Soft labels: Disposable, to be affixed to packaged goods (food, daily necessities), and need to be demagnetized by a decoder.
Hard tag: Reusable, attached to clothing and alcoholic beverages, requires a dedicated magnetic nail remover.
5. How to distinguish the quality of anti-theft devices?
The key lies in two indicators:
① Effective detection rate: The acoustic-magnetic system should be > 98%, the detection distance for soft tags should be ≥0.75 meters, and for hard tags, it should be ≥1.2 meters.
② False alarm rate: The false alarm rate of equipment based on DSP digital signal processing technology is lower.
6. How to handle false alarms caused by environmental interference?
Check by priority
① Remove tags or metal items near the antenna;
② Check for co-frequency interference (similar anti-theft devices nearby need to synchronize frequencies);
③ Large-scale frequency conversion equipment should be staggered during working hours.
7. What are the common reasons for anti-theft devices not sounding the alarm?
① Power supply issues: Loose plug, damaged fuse, unstable voltage;
② Equipment failure: Motherboard damage, loose wiring of the buzzer;
③ Label issue: The soft label has been decoded or affixed to the metal packaging.
