I just noticed that the Venus GX allows for digital inputs via RJ12 socket. I feel a bit dumb asking this question but how does on get a device (e.g. bilge pump) connected in to a RJ12 socket? Is there a digital input device which i would connect deceive like this to, and then connect to the venus per the RJ12 cable.
Any information you could provide would be great, i would love to use this future but just dont have a full understanding how.