Jan starts off by saying that the Venus has 5 digital inputs which can be used for a bunch of tasks. The first ones which come to mind are bilge alarm (Ok/Alarm), smoke alarm (Ok/Alarm), fire alarm(Ok/Alarm), door alarm (Open/Closed), Pulse Meter (water volume pumped), generator (Running/Stopped), etc. And these ‘states’ are all visible on the screen.
Jan suggest that these inputs turn the Venus into a remote boat monitor with capabilities well beyond its original intention. He goes on to show how to do this in detail using some simple and inexpensive add ons. I will let you read his article yourselves on his blog Jan-Kees-Blog
Here is a screen shot of the end results: