SF Cable 24 Port Cat5e Patch Panel with LED Indicator Compatible with 110 Type 568A & 568B Insulation diameter range : 0.70 to 1.40mm Jack contacts : Phosphor bronze, 50micron gold plate over nickel plating. IDC contacts : Phosphor bronze, 50micron gold plate over nickel plating. Safty : UL1863. Operating temperature : -40 to +70 dgree Celsius 25 years warranty