Check the listing for details. Pelco FRD1M1ST Single Channel Multi-Mode Fiber Receiver, ST. Condition: New. Listed at 425.00 USD. The FRD1M1ST fiber receiver provide transmission of bidirectional data over one optical fiber. The FRD1M1ST receiver can be used with Multi-mode optical fiber. The FRD1M1ST plug-and-play design ensures ease of installation by requiring no electrical or optical adjustments. Modular in design, FRD1M1ST unit can be rack-mounted using the EURACK/ USRACK chassis, or stand-alone modules can be placed on a desktop or mounted to a wall (wall mount kit not required).Rack-Mountable Modular Design. Features Bidirectional Data Channel That Supports EIA RS-232C/D, RS-422/RS-485 (2-wire/4-wire) with Tri-State, Manchester, and Bi-Phase CommunicationMultimode Fiber Support for Distances up to 4 km (2.5 mi)Designed to Meet NEMA TS 1/TS 2 and Caltrans Traffic Signal Control Equipment Environmental StandardsLaser Diode for Transmission of Optical SignalsVoltage Transient Protection on All Power and Signal Input/Output LinesLED Status Indicators for Monitoring All Critical Operating ParametersHot-Swappable Rack ModulesStand-Alone or Rack-Mountable Modular Design