Unplug the power supply unit going to the control panel box. If there is a retaining screw remove it first. Disconnect the wires going to the power supply. Open the control box, disconnect the backup battery and remove it from the box.
Unplug the phone line inside the control panel and disconnect all of the wires going to the main circuit board.
Remove the four screws that hold the control panel box to the wall and remove the box.
Remove motion detectors and glass break detectors by prying the cover off of the front of the detector. If there is a retaining screw remove it first. Disconnect the four wires inside the detector, remove the two mounting screws and remove the unit from the wall or ceiling.
Detach smoke and CO2 detectors from the base by twisting them counterclockwise. Disconnect the wires and remove the base from the wall or ceiling. Put the base back on the detector for future use.
Use a small regular screwdriver to pry the keypad from the base. If there is a retaining screw remove it first. Most keypads must be pried from the bottom. Disconnect the wires and remove the base from the wall. Put the base back on the keypad for future use.