B&B Electronics BB-9PFLST NSPP Fiber Optic Serial Converter Modem RS232

Description

Fiber optic data transmission between two RS-232 devices
EMI/RFI transient immunity to surges, spikes, ground loops
Data rate:115.2 kbps; up to 4 km (2.5 mi) range
Quick, inline installation
Note: use in pairs; one at each end of fiber transmission line
Port-powered, no external power required
Optional external powering (power supply not included, sold separately)
Description:
https://buy.advantech-bb.com/Product/Product.aspx?ProductID=BB-9PFLST
Datasheet:
https://advdownload.advantech.com/productfile/PIS/BB-9PFLST/Product%20-%20Datasheet/9PFLST_4318ds20181204012454.pdf
Model BB-9PFLST allows any two pieces of RS-232 asynchronous serial equipment to communicate full-duplex over two multi-mode fibers. Typical distances up to 4 km (2.5 mi) are possible with no external power required. The BB-9PFLST supports both data signals at up to 115.2 kbps as well as the RTS/CTS handshake lines. This means model BB-9PFLST can replace short haul modems and isolators when connecting remote devices, while providing the EMI/RFI and transient immunity of optical fiber. RS-232 connections are provided on the same DB9 female connector, while the multi-mode fiber is connected via two ST connectors. The unit is port-powered by the RS-232 Transmit Data and handshake lines. When handshake lines are not available, or when using a low power RS-232 port, the BB-9PFLST can be powered by an external 12VDC supply, drawing 50 mA maximum (power supply not included, sold separately).