Lantech CM-011-SC/ST/WDM fiber converter series extend not only the transmitting distance, but also are the most economic solution with practical features. For example, Auto-MDI/MDIX feature avoids the problem of cabling. 4 DIP switches are to adjust transmitting mode and Link Loss Forwarding (LLF) feature. The built-in LFP(Link Fault Pass) can link down the Fiber TX or RX when either one is lost in order to mmediate
trigger LLF for complete link down. Lantech provides various modules to satisfy the demand of users include WDM/SC/ST single mode (20/30/60km) interfaces. Furthermore, CM-011-SC/ST/WDM can be plugged in Lantech Converter Chassis for power redundancy and rack-mounting purpose.
Source: http://hf-technology.entertop.biz/site/index.php?cat=176&page=911