Join Date: Feb 2006
Location: Great Barr Birmingham
My Motorhome: Autocruise Startrail
Thanked 21 Times in 19 Posts
Hello and welcome to the Madhouse
I think this is a water level controller so its telling you the fresh or waste water level in your fresh or waste tanks.
You will probally find that now you know its there it will show the level in your fresh tank. Try it when you are filing up etc or when emptying the waste tank.
GMS are a fairly large company selling devices to industry for remote monitoring of water levels so its a fair bet this is what it is.
If you can see something bolted onto the gas bottle thats another matter but if theres nothing in the gas locker then its a fair bet its water level related
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