# T221 Mast Rotation Transmitter

Wireless, solar-powered sensor for determining mast rotation angle.

Overview

Powered by the sun and connected by Raymarine's wireless Micronet technology, the Wireless Mast Rotation Sensor accurately measures the movements of a rotating sailboat mast to provide compensating data to a connected wireless wind system. This ensures wind readings of the highest accuracy on high-performance sailing craft.

-   Compatible with Raymarine wireless instruments
-   Built-in solar panels keep an internal battery pack charged and ready
-   Wireless Micronet networking for easy, no-wires installation
-   Fully waterproof and maintenance-free design
-   Requires a Raymarine Micronet display with compass setup capability for calibration (Digital, Dual Digital or Remote Displays)
-   Micronet Wind Transmitter and Hull Transmitter with Compass Transducer required.

## Details

- **Price:** 1089.0 AUD
- **Vendor:** Raymarine
- **Tags:** Raymarine – Instruments | Marine Instruments & Gauges

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1089.00 AUD | In stock |

## Images

- T221 Mast Rotation Transmitter

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/t221-mast-rotation-transmitter)
> Updated: 2026-06-23