SFP Module one tier 1.SFF Transcesceiver 2.21CFR(J) Class1 3.10km ~ 160km Optional 4.Short delivery time SFP 1310nm Material:High temperature thermoplastic Glass fiber, UL94V0Contact:Copper Alloy, Hard gold plated over nickel;Gold plating thickness:Gold flash, 3u'', 6u'', 15u'', 30u'', 50u'', etcElectrical:Current Rating: Signal application onlyVoltage Rating: 120VACDifferenitial impedance:100 ...