What kinds of supermarket anti-theft devices?

What are the main types of supermarket anti-theft devices?

Beijing Jinshi Weida gives you the answer:

At present, supermarket anti-theft devices and clothing anti-theft devices mainly include 8.2MHZ radio frequency anti-theft devices and 58Khz acoustic magnetic anti-theft devices. What are the advantages and disadvantages of these two devices?

The application of RF equipment is relatively early, and the price is relatively cheap, but the defects in its own principle are also obvious. The frequency of RF equipment is generally 8.2MHZ high-frequency equipment, which is close to the transmission frequency of some wireless devices in life, and is vulnerable to other radios. The impact of the device. The direct manifestation is that the device is prone to false positives or underreporting. At the same time, RF equipment is also particularly susceptible to LED lights, large areas of metal and so on.

Acoustic magnetic equipment is relatively more resistant to interference than RF equipment, and the anti-theft consumables are more compact, and the appearance of the equipment is more beautiful.