1.58khz eas am system 2.Material:ABS 3.stable performance 4.detect all 58KHz AM tags; DSP tech, zero fault alarm High Sensitive ... )Technical specifications:detect all 58KHz AM tags; DSP technology, zero fault alarm Max Detection range:2.5m, about over 4m for 2pieces ... devices and accessories, such as EAS security systems, RF/EM/AM EAS hard tags, soft labels, magnetic strips, lanyards, bottle tags ...