Multi-system, can simultaneously receive GPS (L1C/A/L5) BDS (B1I/B2a/B1C) (E1/E5a) GLONASS (L1) four-system dual-frequency Built-in dual-frequency RTK and inertial navigation fusion positioning algorithm Centimeter-level positioning can be achieved Quick positioning can be achieved in any shielded environment Antenna positioning is integrated for easy design and installation 100% New material Light weight and durability Type: GPS Receiver Interface:USB Model: -2828-RD Algorithm: integrated dual-frequency RTK + fusion positioning algorithm Protocol: KMEA-01830r custom Available baud rate: 4800bps-921600bps (black recognition 115200bps) Number of channels: 128 Sensitivity: Tracking: -167dBm Capture: -158dBm Cold start: -148dBm cold start: average 28 seconds Hot start: -158dBm hot start: average 1 second Horizontal accuracy: horizontal 1cm+1ppm CEP50: elevation 2cm+1ppm CEP50 Maximum altitude: 18000 meters Maximum speed: 515 meters/S Update frequency: 0.25Hz-10Hz Positioning method: A-, dual-frequency RTK+ fusion positioning Voltage: 1.6V-5V Application scope: Intelligent IoT, shared two-, crowdsourcing maps GIS collection, handheld terminals, displacement monitoring Lawn mowers, agricultural machinery, drones and other fields Vehicle positioning, personnel positioning, vehicle aftermarket, etc. Colour:Black Material:plastic Size:Cable: 3 meters Package Contents: 1 x GPS receiver (3 meters) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.