The new generation of channel-type electromagnetic wave system of supermarket anti-theft door is an electronic anti-theft system controlled by software, which uses digital processing technology to integrate with degaussing system, cash register monitoring and closed-circuit television monitoring system. The rapid degaussing plate can be used for repeated degaussing, and the system cost is high. There are two types of electromagnetic wave system: vertical type and channel type. The application environment is mainly in libraries, bookstores, audio stores, hotels, supermarkets, etc.

The electromagnetic wave system of the supermarket anti-theft door has the smallest label, and the price of the label is also cheap. It can be repeatedly demagnetized, but it is vulnerable to the influence of magnetic or metal substances and generate false alarms. The width of the protected exit is generally about 0.9 meters. The system will not affect magnetic objects (such as audio tapes, video tapes, magnetic cards).