WALK THROUGH METAL DETECTOR DEALER IN GOA SGS-100 Single Zone Walk Through Metal Detector "1. Only ONE detection zone. 2. Sound and light alarm, pitch speed can distinguish between metal object size, the alarm volume mode is suitable for different choice, by super bright LED alarm lamp can accurately display the body corresponding highly hiding prohibited items. 3. Single detection area:set up simply, suitable for any person to operate . No blind area and each spot of search coverage are evenly detected. 4. Has 100 sensitivities been adjustment may be required on different occasions to meet separately. 5. Password protection. 5. Harmless to human body:It’s harmless to the heart pacemaker wearer , pregnant women , the floppy disk , film and video."