The system is the upscale commodity antitheft devices and it is the first product which was adopts microprocessor control in domestic. It is can connect multi-aisles, each aisle can give warning. Adopt total digital modulating technique, high sensitivity, the smallest blind area. The detection antennas adopt graceful and modern contour design, the luxurious upscale product with organic glass surface. Facilitates the long-distance detect, the operation and maintain is extremely simple.