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How to Remove an ADT Home Security System

This article is a collaborative effort, crafted and edited by a team of dedicated professionals.

Contributors: Muhammad Baballe Ahmad, Mehmet Cavas, Sudhir Chitnis, and Zhen-ya Liu.

✓ Verified & Tested Information

While we hope you’ll never need to remove your ADT home security system, we understand that life changes and sometimes you have to say goodbye to ADT.


Before you begin the process of taking down your existing ADT home security system, it is important that you prepare properly. This includes making sure that you have all the necessary tools, such as a screwdriver, in order to remove the system, as well as information on your current warranty so that you can transfer it to your new system if necessary. Additionally, you may need to contact ADT for any assistance removing the system, so making sure that you have their contact information on hand is essential.

Gather the necessary tools

In order to properly remove and dismantle an ADT home security system, it is necessary to have the right tools. For example, when removing the equipment from walls and ceilings, you may need a flat head screwdriver as well as a Philips-head screwdriver. Additionally, if any wires are connected to the system, it is important to have wire cutters and electrical tape on hand. You may also need a ladder or step stool depending on where you need to get access in order to remove the equipment. When gathering these tools together, make sure they are all readily available before beginning work on dismantling the system. Having everything you need right there will help save time and energy during the removal process.

Turn off the power

Before attempting to remove your ADT home security system, always ensure the power has been switched off at the breaker. This will help to protect any parts of the system that may still be live so you won’t get an electrical shock. Once the power is switched off, locate the alarm panel and open it carefully by removing any screws or bolts with a screwdriver. Carefully lift out the circuit board inside and disconnect any wires coming from it. Then unplug it from its mount and set aside.

If there are additional components to your system, such as motion detectors, door contacts or window sensors, you should also switch them off at their mounting points so they won’t be able to detect activity around your home when they are removed. The specific mounting method may vary depending on the type of component being removed but will likely include screws or magnets and wires coming from each device that need to be disconnected. Make sure to label each wire so you can easily reconnect them once new equipment is installed. Once all components of your ADT system have been removed, you can proceed with reinstalling a new security system according to manufacturer’s directions.

Disconnect the system

To properly remove an ADT home security system, you must first start by identifying and disconnecting the components. Depending on your system type, this can include motion detectors, entry/perimeter sensors and control panel connections.

Begin by turning off the main power source to the ADT alarm system. If you have an older hard-wired system, it will require access to an AC outlet or circuit breaker box to do this. On newer wireless models, simply locate the battery backup in the control panel and remove it to turn off power.

Next, look for a disconnect switch near each component in your alarm system that you would like to remove first. This switch may appear as a tab or a button depending on the model and brand of sensor installed when your ADT security system was setup. When all components are disconnected, label every wire before unscrewing and detaching them from their mounting locations so that they may be re-connected if needed in future. Once all of these steps are completed your ADT security system should no longer be functioning, allowing you to proceed with any further modification or removal procedures as desired.

Removing the Control Panel

Removing an ADT home security system is a process that should not be taken lightly. You’ll need to make sure that the control panel is properly disconnected before you start attempting to remove the system, otherwise you could end up damaging important components of the system. In this article, we’ll explain how to properly remove the control panel from your ADT system.

Locate the control panel

When you’re removing an ADT security system, the first step is to locate the control panel. The control panel is usually mounted on a wall near the entryway and is used to arm and disarm the system. The exact location of the control panel will depend on which type of ADT security system you have installed in your home. If you’re not sure where it is located, it can usually be found along one of the perimeter walls of your home.

Once you’ve found the control panel, turn off electrical power to both it and your alarm sensors. Then proceed to disconnect all alarm wires that connect to your alarm door/window contacts. After all wires are disconnected, locate and remove all available mounting screws from the back side of the control panel before finally removing it from its installed location. Now that your ADT home security system has been successfully removed, take comfort in knowing that any communications between sensor devices and alarm monitoring services have been discontinued!

Remove the mounting screws

Once you have the control panel disconnected, the next step is to remove the mounting screws. If your home security system does not require a mounting kit or other installation hardware, you can skip this step.

If a mounting kit was included with your system, then you must use this to properly secure the control panel. Begin by removing all screws on the back of the panel, which will be securing it to your wall or ceiling. Usually there are two screws at each corner of the device, but be sure to refer to your installation instructions for exact details. Carefully take down the control panel and lay it flat on a firm surface for further disassembly.

Disconnect the wiring

Once you have powered down the device, proceed to disconnect the wiring from the control panel. Before starting, make sure you have a basic understanding of how your system is wired and that you are aware of what to avoid while in the process.

Begin with any telephone wiring connected to the control panel if applicable. If your alarm system utilizes phone line monitoring, remove the connected 2 conductor cable using a wire stripper or cutter and discard appropriately. The line can then be capped off with a standard phone jack cover or wall plate plug of your choosing.

Care must be taken when disconnecting power wiring from the ADT control panel. Proper grounding wires should be disconnected first and then each point going into the control panel itself. If these wires are twisted together instead of being multi-stranded and crimped, this can create an unsafe situation later on in a different part of your installation by short circuiting existing wires during other projects in future years. To avoid this hazard, be sure each branch circuit is disconnected individually before proceeding with removal of assistance components such as monitoring receivers or standby batteries.

Removing the Sensors

Removing an ADT home security system can be a bit tricky as there are several sensors in the system. These sensors are designed to detect any motion or changes in your home and alert the monitoring service. Each sensor has to be taken down carefully to make sure that the security system is deactivated. Let’s look at how to remove the sensors from an ADT home security system.

Locate the sensors

When uninstalling your ADT system, you’ll need to identify and locate all of the sensors throughout your home. Each sensor will have either a white flashing light or a green, steady light located on the front. If it’s still blinking, then it is still sending a signal that the alarm panel can detect.

Some common types of ADT sensors include motion detectors, door/window sensors and glass break sensors. Motion detectors are typically located near the entry points into a room; they measure infrared energy produced by heat-emitting bodies such as people or pets entering the room. Door/window sensors are triggered whenever someone opens a window or door; they sound an alarm if they detect any forceful attempt to open them (such as through forced entry). Finally, glass break sensors are triggered when glass shatters; these devices pick up ultrasonic frequencies generated by breaking glass and consequently activate the alarm.

Once you have identified where each of these sensors are located, you will be ready to begin uninstalling them from your home security system.

Remove the mounting screws

Once you have disconnected the power to the alarm system main control panel, take a Phillips-head screwdriver to remove all of the mounting screws on your ADT security system. The mounting screws will be attached to all of the sensors and other devices connected to your alarm system. If they are not yet visible, gently pull away any wallpaper or insulation to expose them. Take care not to damage any of your walls as you uncover them, otherwise you could regard up costly repairs. Make sure you firmly grip onto each of the mounting screws with your screwdriver before attempting to remove them from their brackets; this will help avoid any issues along with future rust build-up or scratches on your equipment after it is removed. Once all of the mounting screws have been safely taken out, set them in a safe place so that they can be reattached later if necessary.

Disconnect the wiring

The wiring for the ADT home security system is connected directly to the sensors. Depending on the model, these can be connected to the sensors with screws or soldered. If you have an older model, you may need to solder wire nuts or crimp connectors for each connection. Before you begin, it is important to make sure that you have identified where all of the wires go and which color wires connect to each other. Disconnecting any of these wires can cause complications when it comes time to replace them with new sensors.

Once all of the wiring is disconnected from the sensors, you should use a pair of needle nose pliers or a hand crimper if necessary, to disconnect any connections at the panel board or control box. Depending on your system’s age, these connections may vary slightly but they should all involve disconnecting one wire at a time before going on to the next one.

After all of these connections are removed from both ends (at both your control panel and at each sensor) it is safe to remove your sensors from their mounting panels. If removing additional parts such as heat detectors or smoke alarms, consult your instruction manual for removal instructions appropriate for those particular models.

Removing the Keypad

Removing an ADT home security system can seem a bit daunting, but it doesn’t have to be. The first step to removing your system is to take off the keypad. This can be done easily by removing the screws from the wall mount and detaching the wiring from the box. After that, the keypad can be disconnected from the wall and set aside.

Locate the keypad

The ADT Home Security System consists of several components, including a keypad. The keypad is the main control panel to arm and disarm the security system, and can also be used to call emergency services. If you need to remove your current keypad from your ADT system, here’s how you can do it.

Before beginning the removal process, make sure the power is disconnected from your security system. Disconnect your system by turning off its power switch located at a circuit breaker box or disconnecting any power cords associated with it.

Once disconnected, locate the keypad and its corresponding mounting device on a wall or door frame in close proximity to an area where access control devices such as sensors, smoke detectors or panic buttons are installed. To find these areas in your home security system, refer to the installation guide provided when you first set up your ADT Home Security System.

When you have identified and located the keypad and its mounting device, remove any screws attaching it to the wall or door frame using a Phillips screwdriver before gently pulling off the unit from its mountings. Avoid pushing instructions buttons while doing this so you don’t inadvertently trigger an alarm sound when removed.

Remove the mounting screws

If replacing an existing keypad with a new one, you will need to begin by removing the old keypad. Start by removing the screws that secure the keypad to the wall. Depending on your home security system, these screws may be either visible from the front or hidden from view. Once all mounting screws have been removed, carefully pull forward on the old keypad and gently lift away from the wall plate.

Disconnect the wiring

Prior to attempting to remove the keypad from your ADT home security system, you will need to first disconnect the wires that connect it to the keypad’s back panel. To do this, locate the two screws on the back panel that are used to hold the wiring in place. Unscrew these screws, and then gently pull out each wire. There should be four wires connected to your keypad; these wires will be either black, white, yellow or green. Once all of these wires have been carefully disconnected from the back panel of your keypad, move onto step three: disconnecting any power sources.

Before proceeding further with removing your keypad, you will need to shut off any main power sources that may be powering your ADT home security system. Your security system should be plugged into an outlet located near the area where you are installing it; locate this outlet and switch off its power source prior to attempting to remove your keypad from its current location.


Once you have decided to remove your ADT home security system, it is important to take the necessary steps to ensure that the system is completely removed. This involves physically taking down the parts of the system, as well as a few additional steps to make sure that your home is secure. Follow the steps outlined in this article to properly remove an ADT home security system.

Remove all remaining screws

Once the system’s wiring and central components have been disconnected, all that remains to be done is to remove the mounting screws from the walls. Make sure to locate and remove all remaining screws that were used for the original installation of the ADT home system. Start by removing all debris from around the base where it was mounted. Next, use a standard screwdriver or drill to unscrew any remaining mounting screws from both walls and ceilings. Once all screws are removed, you can dispose of them safely. It is important not to forget any of these remaining screws since they could cause harm if left behind in a hazardous manner. If appropriate safety precautions are taken during removal and when disposing of these materials, you should be able to finish this phase without any issues.

Clean up any wiring

Once you have disconnected the bated wiring from the wall and ceiling, it is important to clean up any leftovers. ADT home security systems usually include plugs and connectors that were used to run wires into rooms throughout your home. It is essential that these plugs and connectors are properly removed so they do not create a dangerous environment for future occupants of your residence. Carefully unplug each connector, ensuring you don’t tug on connected wires or detach any other cabling before removing the plug itself. Make sure no exposed metal remains and that loose wiring is insulated when appropriate. If you’re not comfortable with the cleanup process, contact a professional to take care of this step for you.

Final Steps

Once you’ve disabled the system and disconnected all wiring, it’s time to take the last few steps necessary to remove the ADT Home Security System from your home. This includes removing the control panel, motion sensor, door and window sensors, and other components. In addition, you’ll need to remove the keypad and reset the system code to its default value. Let’s get started.

Reconnect the power

Reconnecting the power to the device is necessary to finish removing the ADT Home Security system from your home. First, locate the AC power transformer and disconnect it from the system. Then find a wall outlet for reconnection and plug in the transformer. Once it has been plugged in, you can reconnect all wires that were previously connected to the security system, and then turn on the main control panel to reset it. At this point, you have successfully removed your ADT Home Security system.

Reset the circuit breaker

Resetting the circuit breaker is critical for a successful removal of your ADT home security system. Be sure to turn the circuit breaker off by flipping the switch to the “off” position and then back to “on” again. This will eliminate any electrical current running through your security system. In addition, it is important that you disconnect all wires from your motion detectors and other sensors, as well as from their respective power sources. The resetting of your circuit breaker should restore power to these devices and clear them of any existing settings or configurations. As an added precaution, use an electrical meter and verify that each wire is disconnected from its power source before continuing with the next step.

Test the system

Once all of the components that made up the ADT home security system have been removed, it is important to test the system to ensure that everything has been disconnected and that there is no longer any hint of power coming through to the system. Use a multimeter to test continuity and voltage levels between the panel wires and each piece of equipment where it was previously connected. If any readings give a positive indication of current flow or show higher than normal voltages, then disconnect those as well. Finally, contact your local Adt monitoring center to inform them that you are taking your business elsewhere so they can remove you from their network.

How to Remove an ADT Home Security SystemCheckout this video:

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