Compliant with IEEE 802.3 z ^^ 1310nm Single-mode, 1000Base-LX ^^ 20km transmission distance ^^ 1.0625G bd Fiber Channel/ 1.25 Gigabit Ethernet ^^ Differential LVPECL inputs and outputs ^^ TTL signal detect indicator ^^ Class 1 laser product complies with EN 60825-1 ^^ Wide operating temperature -40 to 85