They can be removed by prying.
How to remove old adt panel from wall.
After all alarm control panels have been disconnected and removed remove the remaining components such as opening detectors motion detectors and glass break detectors via unscrewing or pulling nails.
There are two small slots on the bottom of the unit and my best guess is that a special tool a key is inserted into these slots to allow the unit to open up this person says putting a small screwdriver in each of the two slots will let you pry it away.
Remove it from the wall.
Depending on the model of the control unit this can be done by removing the main cover from the panel and then unscrewing the mounting screws underneath.
Many detectors will be attached with adhesive.
I removed the 2.
Posted by exogenous at 12 22 pm on november 23 2018.