TP-LINK TL-SM311LS

An excellent and economical choice for anyone who wants to maximise network speed without the need for expensive optical devices. The TL-SM311 is very flexible - when changing the configuration it is not necessary to change the entire device, all that is required is to replace the individual transceiver. This product can reach up to several kilometres. The module is powered directly from the switch. 
Parameters and Specifications
Standards and Protocols
IEEE 802.3z, CSMA/CD, TCP/IP
Cable
Single-mode Fiber
Maximum Cable Length
10km
Operating Temperature
0°C~70°C (32°C~158°C)