Specification1. Frequency:L1,1575.42MHz2. Tracksupto54satellites. 3. Trackingsensitivity:-160dBmAcquisitionSensitivity:-143dBm4. Acquisitiontime(average)ColdStart:36seconds,WarmStart:30seconds,HotStart:1seconds,5.InterfaceUSBconnectorProtocol:NMEA-0183/SiRFBinary(defaultNMEA)BaudRate:default 38400bps6.EnvironmentalCharacteristicsOperationtemperature:-10℃~+70℃.Storagetemperature:-40℃~85℃7.Dimension:73mm 25mm 10mm