HomeAll ProductsCircuit Board Serial-Optical RS-232Circuit Board Serial-Optical RS-232. Power Supply: 24 VDC. Converts RS-232 Wired to Fiber-Optic. Fiber-Optic Transmit and Received Distance using 850nm Multimode is 1.5 km.Circuit Board Serial-Optical RS-232$995.00PriceUSB-Serial Interface Cable*SelectQuantity*Add to CartSerial-Optical RS-232 featuresRS-232 Wired Port (DB9-Female).Fiber-Optic Port (850nm Multimode ST Connectors).Transmit/Receive Distance: 1.5 km.