Beitian BK-252Q GPS Module With QMC5883 Compass NMEA UBX Dual Protocol Drone UAV GNSS Receiver Module for FPV Return Rescue Racing Drone RC Airplane Compatible F4 F7 Flight Controller Specifications:--Electrical Characteristic:Chip:M9140-KB Receiver type:GPS L1 C/A, QZSS L1 C/A/S,GLONASS L10F, BDS B1I,Galileo E1B/C,SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN Default position system:GPS, GLONASS,BDS, GALILEO Augmentation system:SBAS, QZSS Channel:92 searching channel --Sensitivity: Tracking & Navigation:-167dBm Reacquisition:-160dBm Cold start :-148dBm Hot Start :-159dBm --Accuracy: Horizontal position:1.5m CEP Speed Rate:0.05m/s Dynamic heading:0.3 deg Time pulse:RMS 30ns / 99% 60ns --Acquisition: Cold start:24s Hot start:2s Aided start:2s --Data Output: Baud rate:4800bps - 921600bps,default 38400bps Level :TTL level Protocol:NMEA,UBX NMEA messages:RMC,VTG,GGA,GSA,GSV,GLL Update rate:0.25Hz-25Hz,default 1Hz FLASH:With FLASH, the configuration can be changed, and the power will not be lost --Operational Limits: Altitude:80,000m Speed Rate:500m/s Dvnamics :