We have just returned from our last trip of the year to Beechwood Grange near York,always worth a visit.
Anyway,we have a Sargent Stinger 310 alarm on our Orion which has always worked without problem since we had it installed at purchase,and indeed it worked perfectly on our first day,setting and cancelling via the fob with no problem as usual.
On our second day we were on our way out and I blipped the fob,nothing,not a solitary peep was to be heard.
The fob batteries were only replaced a couple of months ago with brand new Duracells as was the spare fob which also didn't work either,although the lights on the fob were both lit so it was unlikely to be fob related.
We had to leave the van unalarmed for the day but when we got back I checked the alarm fuse,all OK,nothing to see by looking at the unit ( as if there would be ),cleaned the battery contacts in the fob but the thing still wouldn't work.
I checked the Sargent web site which mentioned rebooting the alarm software which didn't look too difficult but with the ever present danger of buggering everything up and SWMBO missing Strictly Come Dancing and the rest of the crap,er I mean quality television that she watches I thought I would wait and perhaps get a mobile man who knows what he is about later in the week,albeit at a price of course.
About 8pm I went out for a stroll,mainly to avoid the quality television,and casually pressed the fob on my way out and hey presto back to normal and it still worked OK when we got back to storage.
The only thing I can think of was that there was some interference from something on the site,perhaps another alarm.
I asked the chap to the left of us and it wasn't him as he never used his.
So it remains a mystery,its never done it before.
So if your alarm goes tits up don't rush to repair it or fiddle with it or ring a man,leave it a while and it might just work again.