Lightning protection box has the function of failure warning and the counting function of lightning strike. It can record 99 times of lightning stroke. Without battery , storage of data in solid storage memory can be kept for 20 years without loss.
  When the lightning protection SPD in the box is deteriorated, the remote signal alarm by the instruction lamp, indicating that the lightning protection box has no protection ability and needs to be replaced immediately.

          When the power supply is disconnected, the wiring of the lightning protection box is connected. The connection line of the lightning protection box is connected with the corresponding line diameter of the power line, and the grounding wire should follow the principle of short, straight and thick. Connected, with lightning protection box open at this time, L1, L2, L3 operation indicator light.