1. Built-in 28db gain two-stage LNA amplifier active antenna. 2. The baud rate is optional, 4800, 9600, 38400, 115200. 3. Output statement: RMC, VTG, GGA, , GSV, can choose to output. 4. Level can be : TTL or RS232. 5. Data output frequency is optional, 1HZ - 10HZ. Built-in FLASH can save the parameter settings For outdoor positioning, water detection of marine navigation, GNSS, time synchronization etc.. NMEA:0183 (2.3-4X) The default baud rate: 9600 (set 19200-115200-38400-57600) Refresh frequency: default 1HZ (set 1-10HZ) Built in: FLASH can save settings Support: 12V wide voltage supply. size: 5m Material: Plastic colour: As shown Package Contents: 1 x GPS receiver antenna module Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.