StormDetec Thunder Hunter II is a new generation of all-digital lightning warning system with independent intellectual property rights owned by Argos Photoelectric Technology, a subsidiary of Duval-Messien, France. It is an atmospheric electric field detection product based on on-site grinding principle technology.

Its working principle is to change the change of atmospheric electric field near the surface in real time by amplifying the gain of the electric charge of the detection electrode which is constantly shielded and open into digital electric field value, and to identify and warn the change of atmospheric electric field intensity which may cause lightning strike danger.