... people .Easy to assemble WALK THROUGH METAL DETECTOR MODEL:WE-003 ( 6-33 zones) Technical parameterElectric current: AC100V~240V/50 ... light alarm: LED bar graph on left and right door frame, visible alarm simultaneously to ascertain the layout of metal ... magnetic floppy, recording tapes, etc.ApplicationWalk through metal detector WE-003 is popular used in Airport, banks, Embassies, Jail, Entertainment ...