ALLYSTAR HD8021 Series
1575.42 MHz (GPS) & 16.02 MHz (GLONASS)
50 Channels
-160 dBm
UART
Default: 9600, up to 115200.
Default: 1Hz, up to 10Hz
16.7 * 12.2 * 2.6 mm (L*W*H)
3.3V