CEIA Metal Detector Control Box. Model: THS/3F. S/N: 20300212007. Sensitivity tested with test strips as 1.5 mm ferrous metals, 1.5 non-ferrous metals, and 2.5 mm non-magnetic stainless steel. Actual numbers may vary depending on local site conditions, product tested, and other factors. The max aperture/ clearance above the belt is 35.375 inches wide x 5.875 inches tall. Max product dimensions should not exceed 35 in. wide x 5.75 in. high. Power supply: 115/230 V, 50/60 Hz, 60 VA. Control box: 12 in. L x 7 in. W x 24 in. H. Overall dimensions: 4 ft. 7 in. L x 1 ft. 7 in. W. x 1 ft. H.