The Garrett High Sensitivity Garret Hand Held Metal Detector IP65 Black, SS- safety239 is a sophisticated electronic device designed to identify the presence of metal objects in various materials or within the ground. It has a wide range of applications, from security screening at airports to archaeological excavations and even treasure hunting. The fundamental principle behind a metal detector is the generation of an electromagnetic field and the detection of disturbances in that field caused by the presence of metal objects.

The basic components of a metal detector include a control unit, search coil, and a display or audio output. The control unit houses the electronic circuitry, including a transmitter coil that generates the electromagnetic field and a receiver coil that detects disturbances. When the detector is swept over a material or ground, and metal is encountered, it disrupts the electromagnetic field, which triggers a signal in the receiver coil. This signal is then processed by the control unit, and the information is displayed to the user, often with visual and auditory cues.