... Transcesceiver 2.21CFR(J) Class1 3.10km ~ 160km Optional SFP Module one tier Material:High temperature thermoplastic Glass fiber, UL94V0Contact:Copper ... Gold flash, 3u'', 6u'', 15u'', 30u'', 50u'', etcElectrical:Current Rating: Signal application onlyVoltage Rating: 120VACDifferenitial impedance:100 OHMSMechanical:Durability:100 cycles ... -40°c~+85°cOperation temperature: -40°c~+85°c SFP Module one tier