[. . . ] GR-213USB GPS Receiver Features: SiRFstarIII chipset with embedded ARM7TDMI CPU available for customized applications in firmware High performance receiver tracks up to 20 satellites while providing first fast fix and low power consumption. [. . . ] LED "ON" when power connected and "BLINKING" when GR-213U got positioned. The battery is recharged during Specifications Tracks up to 20 satellites. Acquisition time Reacquisition Hot start Warm start Cold start 0. 1sec. averaged 1 sec. , averaged 38 sec. , averaged 42 sec. , averaged Dimension: 2. 54 × 1. 65 × 0. 7 Weight : < 84g LED function: Power On/Off and Navigation Update Indication Operating temperature: -10 to +60 Inch Storage temperature: -20 to +70 Position accuracy Non DGPS (Differential GPS) Position Velocity Time 5-25 m CEP without SA 0. 1 m/sec, without SA 1 usec sync GPS Time Operating humidity: 5% to 95% No condensing. Power consumption < 80mA at 4. 5- 5. 5V input Protocol and interface: NMEA output protocol: V. 2. 2 Standard: Baud rate: 4800 bps Data bit: Parity: 8 N EGNOS/WAAS Position < 2. 2 m, horizontal 95% of time < 5 m, vertical 95% of time Dynamic Conditions: Altitude 18, 000 meters (60, 000 feet ) max Velocity 515 meters / second (700 knots) max Acceleration Jerk 4 G, max 20 meters/second, max Stop bit: 1 Format: GGA, GSA, GSV, RMC. [. . . ] Optional: Baud rate: 9600, 19200, 38400 Format: GLL, VTG, ZDA, SiRF binary Interface: USB interface Antenna Type: Built in Patch Antenna Minimum signal tracked: -159dBm Physical Dimension Output terminal and definition Output terminal: USB connector Pin definition: Pin 1 2 3 4 Signal Name +5V D+ DGround [. . . ]