Apply NEO-7 Module ,with High Gain Source Antenna
Support GLONASS（Russian Navigational System）
Baud Rate 9600
With IPX Interface，Can be Connected to various Antenna
With Chargeable Battery ，Can saved data when power off ，hot restart
Interface Features：TTL Voltage，Compatible with 3.3V/5V System.
Receival Feature：56 chan...