New autopilot on 2009 sailboat

[Chris - Raymarine - Moderator]

Hi pacman,

The M81105 is current product. Technically the ACU-400 can operate without the M81105. If one is installed on the vessel I would connect it to the ACU-400. A M81105 is included in the box with every ACU-400. I personally prefer to use a M81105 rudder reference unit on autopilots because it gives you a live feedback. That in no way reflects an issue with operating without a M81105. Both options are recommended.

Chris,