Raymarine Wireless Mast Rotation Transmitter [T221] Marine Hardware | Vents Trim tab kits include two

Trim tab kits include two stainless steel trim tabs

Combines battery banks during charging and isolates under discharge

Nylon adapters included for 7/8"

For boats faster than 50 mph the twin cable steering system T72FC is recommended

Raymarine Wireless Mast Rotation Transmitter [T221] Marine Hardware | Vents Trim tab kits include twoThis 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)