This ZNR-214 NMEA Buffer has 2 NMEA inputs and 14 NMEA outputs. This NMEA Buffer is very useful for safety navigation with protecting system faults. For example, in case of using 2 GPS receivers, if one GPS signal is lost, this NMEA Buffer is automatically (or manually) selects another GPS signal, and still maintain output without any system fault.
  This NMEA Buffer can receive any type of serial data such as RS-422 (NMEA), RS-232, 5V TTL signal, and has high voltage and reverse input protection. Two NMEA outputs port is designed for RS-232 type signal.