Multi-defense zone technology: multiple overlapping detection areas Anti-interference: 12 working frequency band is adjustable, multiple devices can alarm at the same time Principle of magnetic field segmentation: 8 grid-like magnetic field distribution, independent detection, real-time calculation UPS backup power supply: 6 hours / 12 hours / 24 hours, many optional Safety: Heart starter device carrier, pregnant women, magnetic media and other harmless Detection ability: 1 minute has the detection passing ability of more than 60-150 people Function of connecting gate: linkage between security gate and gate to manage the alarm personnel Modular design: easy to maintain and update Signal graphics: detection signal graphic waveform display, equipment status at a glance Intelligent image: 10.1-inch screen display, support real-name alarm storage, with traceability of pleasure