The supermarket security door radio system uses radio waves as the transmitted and received signals, and the detection frequency range is 7. x~8. x MHz. The transmitted signal is a radio signal. It is the same signal as mobile phone and radio, but at different frequencies. The biggest advantage of the radio system is that the system cost is very low and the installation is convenient. However, because its anti-theft label is of loop coil type, the system is vulnerable to interference from some items, such as electronic products such as cash registers, metal objects, etc., causing false alarm or false alarm of the system.

The electronic anti-theft system catches the thief on the spot when he goes out, which has a great deterrent effect on the theft behavior. Even if the CCTV system monitors the behavior of hiding goods, it can only wait until he goes out to search and check. The tracking time is long, and it is not necessarily effective. The characteristics of stable performance and anti-interference are widely used in large and medium-sized brand clothing, shoes and hats, leather bags, leather goods, glasses monopoly, Sports goods and comprehensive department stores are exported to the European Union, America and Russia in large quantities.