The Hall Effect Sensor Module can be used to detect the presence of an magnetic field. If there is an magnetic field present, it will report a high level signal.
The TPC8214H, TPC8214, TPC-8214, 8214 is a N-Channel MOSFET TOSHIBA Field Effect Transistor Silicon N-Channel MOS Type (Ultra-High-Speed U-MOS)-SOP-8P.