Phoenix Contact PSI-MOS-RS485W2/FO 850 T FO converter with integrated optical diagnostics - alarm contact - for RS-485 2-wire bus systems (SUCONET K - Modbus ...) up to 500 kbps - NRZ coding - T-coupler with two FO interfaces (BFOC) - 850 nm - for PCF/fiberglass cable (multimode)