1. Built-in 28db gain two-stage LNA amplifier active antenna.2. The rate is optional, 4800, 9600, 38400, 115200.3. Output statement: RMC, VTG, GGA, , GSV, can to output.4. Level can be : TTL or RS232.5. Data output frequency is optional, 1HZ - 10HZ. Built-in FLASH can save the parameter For outdoor positioning, water detection of marine navigation, GNSS, time synchronization etc..NMEA:0183 (2.3-4X)The default rate: 9600 (set 19200-115200-38400-57600)Refresh frequency: default 1HZ (set 1-10HZ)Built in: FLASH can save Support: 12V wide voltage supply.size: 5mMaterial: Plasticcolour: As shownPackage Contents:1 x GPS receiver antenna module KitOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.