Gas vapor detector for engine bilge. Siren whaling, lights lit

I just boarded my 330DA today and found my SA-1 vapor detector screaming away and both the "on/green" and "warning/red" lights lit on the controller.
No fumes from a sniff test. I've concluded that cleaning the bilge yesterday must have let water in somewhere and shorted the system.
Anyways my vapor detector is at least 7 years old and time to replace. For some reason this forum has little info posted in regards to vapor detectors.
I called the manufacturer of my unit (MTI industries) and they said todays warning is the units way of saying there is a fault and it needs a full replacement (not just a sensor).
The complete kit is only $130 directly from their website. They also told me the complete unit must be changed every 5 years.
Anyways I would like to know if there is a better system to buy and better yet is there a system that I can put on my Nmea2000 network so I can have on screen alerts on my chartplotter.
Now that I have heard that siren going off I honestly dont think it would be audible at 30 knots with wind whistling in my ears. I would like to see levels on a monitor that is right in front of my face as a back up plan.

I just replaced my original one with a new one last season. It lasted 15 years and worked great.

I get false alarms on mine after it rains. I is only 4 years old and I replaced the original one because of the same issue.

pjv911 said:

I would like to know if there is a better system to buy and better yet is there a system that I can put on my Nmea2000 network so I can have on screen alerts on my chartplotter.

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I doubt we'll see an fume detector on NM2k. It would be dependent on power going to the backbone, and fueling recommendations include shutting down electronics as part of the process. It would be cool as a secondary alarm, but I would think the primary has to be a stand-alone audible alert.