Never buy Raymarine
products - go for one of the other brands. I've had so much trouble trying to get my systems fixed it's taken over a year now, and still counting. Their customer service team never does anything on time, they promise to send engineers, and they never come, and there's no logical reason why it would take so long to get things fixed.
Really disappointing - must be down to their going into administration and never quite recovering - honestly urge you to stay well clear.