Petrol Vapour detector

[spike2450]

Hi all
I'm thinking of buying one of these - www.nereusalarms.co.uk/html/pv1000_petrol_vapour_detector_.html
has anyone else tried one?
Would this be wired to the main electrics panel or direct to battery i.e "Bilge is checked prior to switching on Battery master switch"
Any help as always would be great.

 

[Its_Only_Money]

I´ve got the Xintex MB-1 from Fireboy (I got mine from West Marine here)

Has the advantage of running the blower and doing something about the vapour even if you don´t hear or action the alarm for any reason.

In three years I have had to replace the sensor due to water damage ($70 from the same source IIRC), but they do have a finite life in any case as far as I understand it....

Mine is wired to the master domestic DC breaker so if the domestics are on then the alarm is on.