The presence of metal will be indicated by an audio warning tone and a red light coming on. The sensitivity is adjustable.
A .38 caliber hand gun will be detected at 7.75 inches on low sensitivity and 11 inches at optimum sensitivity.
A Pen knife will be detected at 4 inches on low sensitivity and 6 inches on optimum sensitivity.
A razor blade will be detected at 2 inches on low sensitivity and 4 inches on optimum sensitivity. 15.5″(L) X 2.6″(W) X 1.25″(H)