What is the difference between the acoustic magnetic anti-theft system and the radio frequency anti-theft system?

EAS electronic commodity anti-theft system, with the improvement of merchants’ awareness of anti-theft, more and more agents are producing and selling EAS series products. The current mainstream is: acoustic magnetic anti-theft system and radio frequency anti-theft system.

Their main differences are:

• 1. The difference between the working principle of acoustic magnetic and radio frequency:

AM acoustic magnetic uses the principle of resonance of the tuning fork in physics, and the working frequency is: 58KHZ

RF radio frequency uses radio wave signals, and the working frequency is: 8.2MHZ

• 2. Anti-interference ability (stability)

The center frequency of the acoustic magnetic anti-theft system signal is 58kHz, and the bandwidth is 57.8kHz to 58.2kHz (0.4kHz), which is the narrowest among all electronic anti-theft systems at present, so it is extremely unlikely to be interfered with and cause false alarms. Strong anti-interference ability and high stability.

The center frequency of the RF anti-theft system signal is 8.2MHz, and the bandwidth frequency standard range is generally 7.2-8.5MHz. Because the detection frequency is relatively wide, any frequency generated by the device during operation within the RF detection range will cause the device to alarm. It is very easy to be interfered by surrounding electrical equipment and cause unnecessary alarms, or false alarms. The stability performance is not as good as the acoustic magnetic system.

• 3. Detection distance and detection rate

AM acoustic magnetic detection distance, soft label detection distance: 150cm-220cm hard label detection distance: 200cm-360cm

RF radio frequency detection distance, soft label detection distance: 80cm-160cm hard label detection distance: 120cm-200cm

The acoustic magnetic wavelength is longer, the penetration is strong, and the anti-shielding performance is good, so the detection rate is higher.

The overall cost of the acoustic magnetic system is higher than that of the radio frequency.

For users of medium and large supermarkets, high-end clothing brand stores, 3C digital products, etc., most of them will choose the AM acoustic magnetic anti-theft system based on comprehensive considerations of quality and anti-theft performance.

Customers with low requirements such as small supermarkets, low-end clothing stores, and convenience stores will consider factors such as cost and cost-effectiveness and choose radio frequency anti-theft systems.

The specific choice of product anti-theft system depends on your actual situation.