Why is the human body electrostatic discharge alarm made of "electrostatic subconductor" material?
Electrostatic subconductor is a material between conductor and non-conductor, and its surface resistivity is greater than 1*106Ω and less than 1*109Ω.
When the charge leaks, because the sub-conductor has a high resistivity, its leakage current is very weak. It is at the μA pole and will not produce instantaneous electric shock. It can avoid the ignition of flammable gas due to electric sparks, so as to achieve the purpose of conductive explosion-proof, and it is more suitable for Inflammable, explosive and other dangerous explosion-proof environments, such as gas stations, oil depots and other places that are particularly sensitive to static electricity.