Circuit electromagnetic field test pen

The utility model discloses a circuit electromagnetic field test pen, including the handwriting, install at the display of handwriting one end and install the circuit board in the display, the embedded detection head of the handwriting other end, embedded detection head through the power cord with the circuit board links to each other, be equipped with power module and WIFI wireless transmitting module on the circuit board, can give the storage module in cell -phone or the computer with detecting information transfer that the head detected, the bottom surface is equipped with the silica gel layer on the circuit board, can fall or shake the in -process, and the protection circuit board lengthens its life, flexible protective sheath has been cup jointed outward to the handwriting, flexible protective sheath one end with display threaded connection. The utility model discloses be difficult to to damage, long service life, and can send detection information mobile terminal such as cell -phone and carry out the information sharing, the practicality is strong.