... .Easy to assemble WALK THROUGH METAL DETECTOR MODEL:WE-003 ( 6-33 zones) Technical parameterElectric current: AC100V~240V ... advanced interactive transmitting and receiving to avoid interference, frequency range from 4K-8K to avoid frequency interference6 preset programs ... floppy, recording tapes, etc.ApplicationWalk through metal detector WE-003 is popular used in Airport, banks, Embassies, Jail, ...