Key Features l, high-precision, high-performance GPS receiver 2,5 V/5.5mm DC power input jack 3,5 V DC power input pin , 3.3V voltage output pin 4 , with a rechargeable battery backup can be achieved quickly locate hot start 1 second 5,5 VTTL level UART interface for easy connection , such as 51 single 5V processor 6,3 VTTL level UART interface for easy connection , such as 3V MSP430 processor 7,1 Road RS232 level serial ports , 1 USB2.0 Interface ( Computer RS232 serial or USB signal access , you can use 3D navigation Kay Rucker navigation map directly targeted voice . ) 8, RS232 using pin lead 9 , easy to connect a computer , with a professional GPS testing software, you can set the baud rate yourself. 10 , power and working status indicator 11 , leads all signal lines for development testing. Standard NMEA0183 output - GPS data format standard , NMEA 0183 is a National Marine Electronics Association (National Marine Electronics Association) is a marine electronic equipment to develop a standard format , and has become a unified RTCM GPS navigation devices in the industry (Radio Technical Commission for Maritime services) standard protocol Performance Parameters: (for reference only) Main chip: U-BLOX NEO-6M C / A code, 1.023MHz stream Receive Band: L1 [1575.42MHz] Positioning performance 2D plane: 3m [average] 2D plane: 2m [average], there WAAS assistance. Drift: <0.02m / s Timing Accuracy: 1us Reference coordinate system: WGS-84 Maximum altitude: 18,000 m Maximum speed: 515m / s Acceleration: <4g Electrical properties: Tracking sensitivity:-161dBm Acquisition sensitivity:-148dBm Cold Start Time: 38s [average] Warm start time: 35s [average] Hot start time: 1s [average] Recapture Time: 0.1s [average] Operating temperature: -40 ? to +80 ? The electrical properties of the interface: Voltage range: Mains to +3.3 V, RTC power