Div. 2 / Zone 2 Ex-rated barrier SK-PC-D2-UU1-10-HS, Div. 2 / Zone 2 Ex-rated barrier, Peripherals, 1- or 2-channel Division 2 non-incendive barrier, Div 2/Zone 2 mountable, USB or PS2 interface for Ex-rated keyboard or mouse, SFP Multi-Source Agreement compliant, Ethernet link up to 2 km, Duplex LC connector, Accuracy 0.1 %