T222 Vertical Wind TransmitterThis unique wireless 1.35m (4'5") mast head unit with transmitter lifts the wind sensor into clearer air. This enables it to provide highly accurate figures for TWS and TWA by reducing errors from disturbed windflow around the mast head and dramatically reduces upwash when sailing downwind, giving you accurate data for performance funtions. Easily fitted with the mast in place. Calibration can be done at any Micronet display.Features:Lightweight Carbon fibre construction300 hours autonomyRaises the transmitter into cleaner airRemoves wind shearReduces errors around the mast headProvides accurate values for TWS, TWAAcurate for performance functionsSupplied with Mast Top mounting