Standard DIN Rail-mounted shell. Single mode optical fiber, SC pluggable socket. Model: BRT FB3285 Operating Power Supply: 12-57VDC via wiring terminals Input/output ports can be either RS485 or RS232 or 422. RS485 600W anti-strike protection,withstanding 250VDC voltage. Max. 32 nodes in RS485 ports. Have working status and power supply status indicators. Operating temperature range: -20-65, non-condensation. 12-57VDC wide range power supply input. RS485 Ports standards In compatible with EIA/ RS232, RS485/422 standards RS485 Port Pluggable wiring terminals SC Port Single mode optical fiber, SC pluggable socket. RS485 Terminal Resistance RS485 twisted pair / shielded twisted pair. Terminal resistances added to RS485 port based on application requirements, Nodes number Max. 32 nodes. Transmission rate 1200-115200bps automatic adaption Baud Rate 1.2K, 2.4K, 4.8K, 9.6K, 19.2K, 38.4K, 57.6K, 115.2K Kbps, automatic adaptation Data Bit 8, N, 1 Optical Fiber parameters A Terminal: T1310 R1550 B Terminal: T1550 R1310 Power consumption 1.5W Max. transmission distance 20Km Fiber RS485: 10m @ 9.6Kbps RS485/422: 1200m@ 9.6Kbps LED indicator Each channel has working status indicator Operating temperature -20 to +65 Storage temperature -40 to +85 Operating Humidity 25% - 95%, non-condensation Storage Humidity 0%-95%, non-condensation Color:As Shown Material:plastic Package Contents: 1 * RS485 to Fiber Optical Converter set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.