What is the difference between the S135, S185 and S124?

The main differences are screen size, touchscreen functionality and brightness:

• S124: 23.5″ Full HD monitor, non-touchscreen, designed primarily for indoor or below-deck navigation stations.
• S135: 13.3″ Full HD touchscreen with 1000-nit brightness, ideal for compact daylight marine installations.
• S185: 18.5″ Full HD touchscreen with 1000-nit brightness, offering a larger display for daylight navigation.

The S135 and S185 are designed for touchscreen operation and bright outdoor marine environments, while the S124 offers a larger non-touch display for indoor applications.