Because of this, all system electronic products must pass the IEC61000-4-2 system-level ESD test specification. The IEC61000-4-2 ESD Gun simulator will have a host body to set related parameters. The host body will be connected to a pistol-shaped transmitter through a cable, which is why it is called an ESD Gun. The pistol-shaped transmitter has an internal module at 330 Ω and 150 pF to comply with the IEC61000-4-2 specification for the human body model. The electrostatic gun head has an Air Discharge Head and Contact Discharge Head for replacement. Among them, the Air Discharge Head is to simulate the discharge of static electricity through the fingers of the human body. The Contact Discharge Head is to simulate the discharge phenomenon of human beings using metal objects such as screwdrivers. The peak current of its discharge current waveform under ESD 8 kV will be as high as 30 A.