1. power protection 2. lightning protection 3. TLC-3 4.With a ... steel , flame retardant, anticorrosive2.lightning protection unit is KLY products, modular design, convenient testing and replacement3.With load overcurrent, overheating,no ... of maintenance, easy operation, easy to install UsageKLY Series modular type surge protect power supply system access lightning equipotential system, prevent the low ...