No Rudder Sensor
I envy you guys who are going to do this install and don't have to fool around with a rudder sensor. I think the rest of it is the same as the S2, and it's pretty straightforward. Enough cabling to reach almost anywhere, and the instructions are fairly straight forward. Be careful with the compass. The directions show it to be preferable to mount it as close to the center line as possible, and as low as possible. This lead me to think bilge, but a call to their tech support revealed that it had to be kept mounted in a dry place. They told me it is supposedly splash proof, but not water proof. Good luck on your install, and good sailing.