NMEA Buffer 2S12

NMEA Buffer has been designed to distribute NMEA or other RS422 signals from one transmitter up to 12 listeners. Transmitted signal is galvanically isolated from power supply and all listeners. Unit can operate with signal speed up to 230400 bps and power supply range from 9 to 36 VDC. Unit has possibility to connect two independent NMEA transceivers (in example two GPS receivers) and distribute manually selected signal source to all listeners – optional switch connection is necessary. Device has 3 functional modes: Dual Independent Transmission - Dual buffer 1 to 6, Single Input Transmission - Single buffer 1 to 12 and Selectable Dual Input mode - Single buffer 1 to 12 with selectable input great for GPS distribution.

  • Power Supply: 24VDC (9 to 36VDC)
  • Power consumption: Typical 3,1 W, maximum 7,5 W at 24VDC
  • Galvanic isolation: Power supply 1,5kVDC, signal input/output up to 5kVRMS
  • Short circuit output protection
  • Reversed power supply polarity protection
  • Over voltage power input protection (up to 37V)
  • Number of inputs: 2, manually selectable
  • Number of outputs: 12, manually configurable
  • Input/output signal speed: Up to 230400 bps
  • Connection: cables diameter up to 1,5mm2
  • Dimensions: L 92,0mm x W 86,4mm x H 72,0mm
  • Mounting: DIN Rail.
  • Alarm relays: Power loss, signal loss
  • Approvals: EMC according to IEC60945
  • Warranty: 24 months

2S12 Selector Switch is great to build GPS distribution with manually selectable input. It is a complete click-and-go solution. Easy to install and connect, just plug in included LAN cable to the switch and NMEA Buffer 2S12.

Set contains:

  • Selector switch
  • 5m LAN cable (straight through)
  • "1-2" scale

Wall mounting box with cable glands and DIN Rail for easy installation outside navigation console.


  • Dimensions: L 250mm x W 190mm x H 90mm
  • Material: Polycarbonate
  • Temperature °C (continuous): -40 … 80°C
  • Ingress Protection (EN 60529): IP66/IP67

  • slide
  • slide
  • slide
  • slide
  • slide