Features: The CLSFP13GELXDI /CLSFP13GELXD are small form factor pluggable (SFP) transceiver compatible with multi-sourcing agreement (MSA). It is suitable for single-mode fiber (SMF) communications in 1.25Gbps Ethernet and 1G/2G Fiber Channel. C-light transceivers are Class 1 Laser Products comply with FDA regulations. Meet Class 1 eye safety requirements of EN 60825 and the electrical safety requirements of EN 60950. Small Form Factor Pluggable (SFP) transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement, The transceiver consists of four sections: the LD driver, the limiting amplifier, the DFB laser and the PIN photo-detector. The optical output can be disabled by a TTL logic high-level input of Tx Disable. Tx Fault is provided to indicate that degradation of the laser. Loss of signal output is provided to indicate the loss of an input optical signal of receiver or the link status with partner. Fit for CISCO for HUAWEI for H3C for Juniper for HP for D-Link for TP-Link Descriptions: Up to 1.25Gbps data links 20km with 9/125