The NetProtect lowers the excess voltage to the safe level, according to European standards set for this type of equipment, what decreases the number of equipment damages; It doesn't need power supplying and doesn't interrupt data transmission; Inter-wire threshold voltage (line-line): 7.5 V ; Voltage protection level line-PG: 500 V ; Maximum impulse voltage (peak-to-peak): 6 kV ; Maximal discharge current (line-line): 132 A (10/1000µs) ;