1, AC Power Supply Lightning Protection Box 2, Italy brand 3, 30 years experience 4, CE,CCC, ... . The integral lightning impact current: 100 KA (10 / 350 μs).Low residual voltage, equal to and less than 2.0 kV ... .Indication for working status.Automatic resetting after acting, without influence on normal power supplying.Without need of special installation environment and regular inspection ...