40 Type 150/400 Autopilot System: Installation GuideStep 99.3 Connecting optional componentsGyroPlus yaw sensorThe Type 150 and Type 400 course computers do not contain abuilt-in GyroPlus, but you have the option of adding:• an external GyroPlus (part number: M81162)• or a dealer-fitted internal GyroPlus (part number: A18069)Handheld remotesYou can connect handheld remotes to the autopilot system:• the ST600R remote control unit (part number: A12016) can actas the sole pilot control unit in your system or as a full-functionremote for systems with other fixed pilot control units• the compact SeaTalk handheld remote (part number: A15002)gives you full course control away from the main steeringpositionExternal alarmThe autopilot system sounds an off-course alarm from all controlunits. On large and/or noisy boats you can fit a Raymarine externalalarm (part number: Z035, connected though E85001 interface box)as a high volume repeater.Wind vane (sail boats)The course computer can use wind angle information from a windvane or instrument to maintain a course relative to the wind. You canprovide wind angle information to the autopilot system by connectingit to:• a suitable SeaTalk or NMEA instrument (providing wind angleand speed information)or• a Raymarine pushpit wind vane (part number: Z159) connectedthrough an interface box (part number: M81189) To install any of these options, refer to the information supplied with thecomponent.