
Professional Cheap Foif Land Surveying Instrument Gnss Rtk Rover A90. Multi-System GNSS Support: Tracks GPS, Glonass, Galileo, BeiDou, QZSS, IRNSS, and SBAS simultaneously. 60-Degree Tilt Survey: Automatic correction system allows accurate data collection even when tilted up to 60 degrees. High Channel Capacity: Equipped with Hemisphere P40 board supporting 800 channels for enhanced signal reception. Long Battery Life: Dual 7.2V/3400mAh batteries provide at least 10 hours of continuous operation. IP67 Waterproof Rating: Dust and water resistant with 2-meter pole drop shock resistance for rugged field use. Real-Time Data Monitoring: WebUI control via WIFI allows remote settings modification and status monitoring. Fast Update Rate: Standard 5Hz update rate with optional activation for 50Hz high-frequency data. Integrated 4G Communication: Built-in 4G module supports multiple global bands for seamless data transmission.