... sensitivity have 20channel smallest size:25*25*8.5mm RS232 or TTL interface module,gps module,high sensitivity with smart ... NMEA-0183/SiRF Binary (default NMEA). uBaud Rate: 4800, 19200, or 57600 baud (default 4800). uMultiple I/O pins reserved for ... digital connectors uuFully automatic assembly: reflow solder assembly ready RS232 or TTL interface module,gps module,high sensitivity with smart antenna ...