Raymarine Wireless Mast Rotation Transmitter [T221] Marine Hardware | Vents *Using with ST70 requires purchase

*Using with ST70 requires purchase of ST70 Wind Pod

Nylon adapters included for 7/8"

25" x 21 Pitch

WARNING: This product can expose you to chemicals including Di-isodecyl Phthalate (DIDP) which is known to the State of California to cause reproductive harm

Entering the transom 6" above the water line

Raymarine Wireless Mast Rotation Transmitter [T221] Marine Hardware | Vents *Using with ST70 requires purchaseThis unique transmitter compensates for the movement of a rotating mast to ensure that you get the most accurate wind readings at all times. Operating as a wireless device on a Micronet network the Mast Rotation Transmitter compares compass information from the boat with its own information and corrects the wind angle coming from a standard wind transmitter at the mast head. Features: No wires Solar powered Light weight Quick Guide (pdf)