Hull Transmitter
Hull Transmitter

Hull Transmitter

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The Raymarine® T121 Wireless Hull Transmitter sends data from transducers to instrument displays via wireless link.


  • Functions include: Boat Speed, Depth, Compass.
  • Sends speed, depth and compass transducer information to Raymarine instrument displays via wireless link
  • Can be installed in any convenient location on the boat, but usually close to transducers
  • Simple color-coded connections
  • Watertight construction
  • For multihulls, advanced Micronet technology allows your displays to use wind direction to automatically determine which hull transducer supplies the information you need – no switches required*

*Note: (2) hull transmitters required for this configuration

In the Box:

  • T121 Hull Transmitter


  • Raymarine Model No. T121
  • Operating Voltage: 9 - 24 Volt DC / integral lithium battery with 300 hours autonomy
  • Dimensions: 4.33" W x 4.5" H x 1.22" D

After ordering online, you will receive an automated email confirmation containing your order details. Your order will then be confirmed within a few minutes of placing your order.

It is our policy to ensure we deliver to our customers in a timely manner. In order to achieve this we use a range of freight companies depending on the size and weight of your order. In some instances we may use a number of carriers to get your products to you. For example, chain may come by road, some electronic equipment by air.

Most orders are shipped within 2 - 5 Days

Shipping rates

Orders delivered to Australian Post Codes attract an $18.00 Flat Rate Shipping Charge* This excludes Bulky or Dangerous Goods

For Bulky Goods, Dangerous Goods and Remote areas.

If the cost to send is vastly different to our standard delivery costs, someone from our team will contact you prior to dispatch to arrange further payment or to issue a refund if you are not happy with the additional charges.

International orders will be charged at $0.00 initially and our staff will be in contact with a shipping quote. If the quote is not accepted the customer reserves the right to cancel their order and be refunded in full.

Should you have any queries or concerns about shipping, please don't hesitate to get in touch by clicking the support button on bottom right of the page.

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