In the normal working state, the lightning protection module inside the lightning protection box is in the open state, which does not affect the normal operation of the circuit. When the lightning strikes the transient overvoltage, the lightning protection module will quickly pass in a short time and short the overvoltage to the earth. When the overvoltage is disappearing, the lightning protection module will automatically restore the open state. It does not affect the power supply of the user and effectively protects the electronic and electrical equipment.

            A full range of AC power lightning protection boxes designed for communication system, all of which are designed through free maintenance, and have remote alarm and lightning counting functions. The maximum recorded data is 9999 times. Instead of using battery memory, memory storage is stored in solid state memory for 20 years. 3+NPE protection mode is mostly used for lightning protection of communication base station.