Bongo Fury

The strange thing about this is my lca (haydn type) has picked up the occasions when my coolant level has dropped too low.

Why do you have "Have mainly pure coolant and little water" and not the normal mix, such a high concentration will reduce the cooling efficiency a lot, and its not as if your in the coldest part of the country ?

30% antifreeze is good.

Our alarm is designed to work correctly with between 30/40% antifreeze. Much more and the resistance is low and the alarm will misbehave.

If it ain’t broke don’t fix it......

The whole point is, if it’s fitted properly and your cooling system is as it’s supposed to be you won’t have any problems.....suggest you find out what’s up and fix it.
Just saying

But it only beeps for a max 2 seconds when you switch on, you can always put a bit of blue tac over the beeper,