Suitable for applications requiring a single point-to-point or a multi-point communications link, the Model 4152/4153 ST Fiber-to-Multi-Point RS485/422/232 Interface Converter from Electro Standards Laboratories has typical operating speeds up to 1.5 Mbps for RS232 to fiber conversion and up to 5 Mbps for RS485/422 to fiber conversion.  Available in both desktop and board versions, the device features include ESD protection as well as 3 kVDC of isolation.  

Electro Standards Laboratories
401-943-1164, www.ElectroStandards.com
eslab@electrostandards.com