Hi there good afternoon. I bought my Defender 3000 in the year 2000. It has served me well since then but has lately started to give spurious alarms and I get the impressipn the spare parts are difficult to source. I decided to bin this one and buy some form of wireless alternative. I mentioned this to the guy who maintains it annually and he wasn't too happy about it. What I would like to know is what is the sequence of events to stop the alarm going off when I turn the mains power and start opening the box to remove the battery backup. I assume that if I just turn the power supply off at the mains, the battery will kick in and the alarm stay armed.
What is the best way that I can go about taking the alarm down without annoying neighbours and defening myself. Given the few words exchanged with the maintaining guy, I am loathed to pay him.
Any advice will be greatly appreciated