Lunar alarm trials

Hi all, for your information: I recenly had a problem with the alarm making a twittering sound intermittantly. On investigation I found the 9 volt rechargable backup battery had leaked and corroded the holder and was spreading onto the pcb, the van is only 3 and a bit years old. A new battery and holder and a clean up and neutralising of the corrosion and we are now twitter less! Plus alarm and awning light now working normally.