I am asking more-or-less the same question as in this post: How can I disconnect power to an ADT alarm system?
The house has an ADT alarm installed by its previous owner. I am not paying for monitoring, so I see no real value in it. It has become a nuisance lately because there are battery-powered smoke detectors which signal back to the system, as I've recently discovered, do so on low battery.
I've attached some pictures to help with specifics. As it appears to me, the unit normally draws power from an A/C adapter next to the box, but also has a backup battery. My question: can I simply disconnect both, or would there be other power sources to feed the system's noise makers?
I'm wondering about the control panels… I assume they are hard-wired, but would they have their own internal back-up power or operate solely from their connection to the main unit?
This is one of two control panels (both are identical in appearance):
Manual cover page to identify the specific model:
Best Answer
Note that it would be dangerous to go without some compliant smoke alarm system - in the comments, @Anthony X indicates there are other smoke detectors / smoke alarms present.
I'd say it's 99%+ that the battery and power supply are the only two sources for the system and if you unplug them it will be down. You might as well unplug the phone line connection on the right too.
Be sure to test the remaining smoke alarms, and make sure the system alarms as it should, and that there are still working smoke alarms in all the necessary areas. At a minimum, you want one in every bedroom, and in the hallways outside of the bedromms, and make sure there's one on every floor of the house - including the basement.
I would probably check out all the existing smoke detectors and replace them with something current. Smoke alarms don't last forever, I'd rest easier if I knew what I have and had confidence that it works as it should.