Additional info - Functioning :45s after powering up, the antenna is functional to transmit "Tops" based on your speed without any calibration beforehand. - Technical characteristics :Power supply: 5-18 VdcOutput signal: 60 Top/mRefresh rate: 5 measurements/s (5Hz)Speed range covered: From 1 to 30 km/hCable length: 5m on wired outputDimensions: 85*38mmWeight: 694 g - Electrical connection:Wire No. 1 = GroundWire #2 = SignalWire No. 3 = Power supplyThread #4 = Feedback (optional) GPS ANTENNA E17MG00016