1,em library book security detector 2,Higher sensitivity 3,Modern contour ... wood material 5.Anti-theft device em library security gate, em library security system Model: SSLT-EM-9188 NEWDescriptions:* Material: High ... labels and strips such as 3M,Meto, ect.* Microprocessor control technology, high sensitivity with above 98% detection rate, ... x 25mm Weight 20kg/pce SSLT em security system for library