I've never used the alarm system, as it seemed too much hassle. However, I had a brief power cut yesterday, and the alarm went off, very loud. I flicked the switch down in the fuse box, turning the alarm off at the source, which seemed to fix it. But at 2am this morning, it started at a constant low level alarm which is driving me nuts. I can't see how to take the front panel off of the noise source, to remove the battery. Any suggestions?

Kate, December 2014

replace the battery inside the panel.turn mains power off first

gts, December 2014