Feature:1. Equipped with standard 25 x 25 x 4MM high sensitivity GPS antenna, which bring good positioning effect2. Adopt UART / TTL level, 232 optional interface possess stable performance and high transmission3. Use KDS 0.5 PPM high accuracy TCXO; built-in SQI flash memory; built-in RTC crystal and Picofarads capacitor, possess faster heat root4. Built-in LNA, low noise amplifier 1-10Hz, which bring a quiet environment in work5. Online support for AssistNow and offline for AssistNow, GPS, GLONASS, GALILEO, SBAS (WAAS, EGNOS, MSAS, GAGAN) hybrid enginesSpecification:Item Type: GPS ModuleMaterial: PlasticModel: VK2828U7G5LFMain Chip: UBX-G7020-KTC/A, 1.023MHz streamReceiving Frequency Band: L1[1575.42MHz]Receiving Channel: 56CHS11 SWR: 1.3S22 SWR: 1.3S21Log Mag: 20.0dBS11 Smith: 50Q5%Positioning Performance:Horizontal Position Accuracy: <2.5meter[Autonomous][50%]<2meter[SBAS](CEP, 50%, 24 hours static, signal strength -130dBm, about 6 usable satellites)Speed: <0.1meter/sDirection: <0.5Degrees Timing Accuracy: 30nsReference Coordinate System: WGS-84Maximum Altitude: 50000meterMaximum Speed: 500meter/sAcceleration: 4gElectrical Performance: Tracking Sensitivity: -162dBmCapture Sensitivity: -160dBmCold Start Sensitivity: -148dBmWarm Start Sensitivity: -148dBmHot Start Sensitivity: -156dBmCold Start Time: 29s (average)Warm Start Time: 28s (average)Hot Start Time: 1s (average)AGPS[Network Aided Ephemeris Data]: 3s(average)Data Rate: (UART/TTL): 9600bps (default) (Configurable Through Software: 4800, 19200, 38400, 57600,115200, 230400, 460800, 921600)Output Sentence: NMEA0183V3.0 (GGA, GSA, GSV, RMC, VTG, GLL) protocol data, output sentence combinations can be customizedWorking Temperature: -40 to +85Other Parameters:Standard Clock Pulse: 0.25Hz~1KHzPositioning Update Rate: 1Hz~10Hz (default 1Hz)UART/TTL port interface (default)RS232 port interfaceoptionalBuilt-in SQI FlashAntenna Size: Approx. 25 x 25 x 4mm / 1 x 1 x 0.2in.Package List:1 x GPS Module1 x Antenna