portable walk through metal detector

It has been adopted in Beijing 2008 Olympic Games. 1.)Six/Eight/Ten mutual over-lapping detecting zones for option; Simultaneous alarm from multi-zones 2.)5.7inch LCD screen,both Chinese & English program,easy to operate.3.)LED indicator light on both door panels,visable alarm simultaneously to ascertain the layout of metal articles.4.)Self-diagnosis function when machine start.5.)Sensitivity adjstable: Each zone sensitivity from 0-99 , Whole sensitivity has three patterns: Highj,middle,Low6.)Using Electro-Magnetic Fields Technologies,sensitivity to ferrous and non-ferrous metals ,especially to ferrous metal7.)Infrared remoter controller and digital operation keyboard on the base unit.8.)Microprocessor control on top unit,anti-interference and sel-diagnose transmission channel to avoid internal and external interference.9.)It can detect about 4.-50 persons per minute.10.)Friendly interactive man-machine interface.11.)Protection with password: The top base unit can be locked,only the authjorized person can operate with keys and correct password.12.) Infrared sensor control,Automatically count passengers and alarms.13.)PVC material,waterproof and shockproof.14.)Harmless to human body.