Supports along the wall were 5 4 pine.
Remove adt panel from wall.
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.
With the shelves down and the old holes filled threw up a coat of kilz and then out up the supports and cut the shelves to fit removed everything to paint the shelves and pantry.
You will use common household tools to remove the motion detector from where it is placed in the home.
Given the quality of the pine and the infinitesimally small price difference between the two i d have gone all poplar.
This person says putting a small screwdriver in each of the two slots will let you pry it away.
To remove a motion detector that is malfunctioning such as setting off false alarms disconnect it from the control panel that controls the alarm system.
There is a screw holding the shell of the battery compartment in the back of it.
Remove the battery cover by taking the screws out at the bottom edge.