BDTRP439S1SN/D-20 Small Form Factor Pluggable (SFP) transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA). The SFP transceiver supports dual data-rate of 1.25Gbps and from 20km transmission distance with SMF. They simultaneously comply with the standards IEEE Std 802.3 and IEEE 802.3u. The SFP module can be compatible with other brand switch devices like Cisco,Huawei etc.The SFP module has the function of AGC (Automatic Gain control without attenuator).