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    Serial to Fiber Converter, 1* RS-232/485/422, 1* Fiber Port, -40~85°C working temp. single DC (12V~48V) power or AC(100V~264V) optional.

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    SEVR-M2-F is multi-functional fiber optic MODEM supporting asynchronous RS-232, RS-485, and RS-422 communication interfaces, which is the best choice for connecting RTUs to Hosts or SCADA. It supports RS-232, RS-485 and RS-422 asynchronous communication protocols, and can mix two RS-232, RS-485, or RS-422 interfaces at the same time. It supports 2-wire (half-duplex) RS-485 and 4-wire (full-duplex) RS-422 working modes. The RS-485 method of the SEVR-M2-F supports data transmission control (TXD or SD), which improves the ability to adapt to various software types and simplifies the control method. The communication distance can reach up to 4 kilometers for multi-mode and 20 kilometers for single mode. The max transmission rate of RS-232 is 115.2KBPS, and the max transmission rate of RS-485/RS-422 is 460KBPS.

    Product Features:
     Support RS-232/RS-485/RS-422 interface
     Asynchronous transmission: point-to-point, 460Kbps
     Transmission distance: 3,000 meters for multi-mode, 18,000 for single-mode
     Operating temperature: -40°C to +85°C, humidity 5% to 95%
     Operating wavelength: 1310nm (multimode), 1310nm (single-mode)
     Electrical interface: 
       RS-232: use terminal block 
       RS-485/422: use terminal block 
       Optical Interface: ST Interface (SC/FC Interface Optional)
     RS-232 interface features: standard RS-232 three-wire interface +/-15KV (anti-static) ESD protection supports 115.2Kbps max rate
     RS-485/422 interface features: port auto negotiation is used to realize self-adaptation from port to rate adjustment, no need to switch settings, and 15KV (anti-static) ESD protection supports up to 128 polling