Tallysman 33-TP5390CSDK-0 Development Kits SDK with TruPrecision Software for TW5390C GNSS GPS MODULE: L1 L2 antenna with u-blox ZED-F9R & NEO-D9C. RTK Rover. Point One Nav Polaris RTK, Swift Nav Skylark RTK, CLAS PPP-RTK, u-blox PointPerfect PPP-RTK. Inertial Measurement Unit. RS-422 & USB