1、The fiber optic transceiver interface is compatible with EIA/TIA RS‑485/422/232 standard and has standard plug‑in terminal blocks. 2、Provide 600W surge protection and 250V withstand voltage protection, has high reliability and safety. 3、With DC9‑24V and DV5V two power interfaces, standard power socket, suitable for a variety of data terminal equipment. 4、The on‑board transceiver indicator can display the working status of the optical fiber in real time. 5、The optical fiber converter is small and compact, and the guide rail design is easy to install and disassemble. 2 x Fiber Optic Converter1 x English User Manual Item Type: Fiber Optic ConverterMaterial: ABSModel: YN4542-A+YN4542-B (used in pairs)Interface: Compatible with EIA/TIA RS-485 standardOptical Interface: RS-485 pluggable terminal block, twisted pairOptical Fiber: pluggable SC interface, single mode single fiberPower Supply: 5.5mm inner positive and outer negative, standard power socketInterface Protection: RS-485 600W surge protection, 250V withstand voltage protectionNodes Number: RS485 maximum 32Terminal Resistance: RS485 external connection as requiredBaud Rate: 1.2k, 2.4k, 4.8k, 9.6k, 19.2k, 38.4k, 57.6k, 115.2k self-identificationData Bits: 8, N, 1Optical Fiber Parameters: A End T1310R1550B End T1550R1310Transmission Distance: Optical fiber approx. 20km / 65617ftRS485 approx. 1200m / 3937ft at 19.2kbpsPower Consumption: 1W DC5VStatus Indication: Real-time display of on-board transceiver indicatorWorking Temperature: -20℃~65℃Working Humidity: 25%~85% (non-condensing)