The Raymarine T121 Hull Transmitter leverages advanced Micronet wireless technology to deliver clean, reliable depth and speed data to compatible displays. On multi-hull vessels, the system uses wind direction data to automatically select the active hull transducer — no manual switching needed. Two hull transmitters are required for a multi-hull configuration.

Specifications:

• Compatible with Raymarine Micronet wireless network
• Automatically determines active hull transducer using wind direction data on multi-hull setups
• No switches required for multi-hull operation
• Two units required for multi-hull configuration

Resources:

• Owner's Manual (PDF)
• Quick Start Guide (PDF)