The acousto-magnetic system uses the resonance phenomenon generated by the tuning fork principle to achieve almost zero false alarm operation.
When the frequency of the transmitted signal (alternating magnetic field) is consistent with the oscillating frequency of the acousto-magnetic tag, the acousto-magnetic tag will cause resonance similar to a tuning fork and generate a resonance signal (alternating magnetic field); when the receiver detects it continuously 4-8 times (adjustable) ) After the resonance signal (once every 1/50 second), the receiving system will issue an alarm.
The characteristics of the acoustic and magnetic system are high anti-theft detection rate, almost zero false alarms, not shielded by metal foil, good anti-interference, and protected exit width (the maximum width of a single system can protect 4 meters)