The Red Lion N-Tron® Series NTSFP-LX-40 is a singlemode gigabit fiber SFP (mini-GBIC) transceiver. It features 1000BaseLX, 40km singlemode fiber with an LC style connector and can be used with N-Tron's 7000 series Ethernet switches. Wavelength: 1310nmTX Power Min: -2dBmRX Sensitivity Max: -22dBm