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How to Disconnect Your Bosch Alarm 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

If you need to disconnect your Bosch alarm system, follow these simple steps. With just a few minutes of work, you’ll be able to deactivate your system so that you can make any necessary changes.

Preparing to Disconnect

Disconnecting your Bosch alarm system is a simple process, but it’s important to prepare properly before beginning the process. First, make sure you have the proper equipment: the Bosch alarm system manual, a step ladder, a flat head screwdriver, wire strippers, a non-contact voltage detector, and safety glasses. Once you have all the right equipment, you can begin the process of disconnecting your Bosch alarm system.

Turn off the power switch

Turn off the power switch on the Bosch alarm system before beginning the disconnection process. This switch is normally located on top of or just under the unit and should be labeled as a “power” or “power supply” switch. Once switched off, all electrical power to the device will be disconnected, allowing you to safely disconnect any additional cables from its ports. Depending on your model and setup, you may need to also turn off a secondary power switch located inside the box. This switch is used for providing power to any sensors or other parts connected directly to your Bosch alarm system. Make sure both switches are switched off before continuing with the disconnection process.

Remove the batteries

Removing the batteries is the first step toward disconnecting your Bosch alarm system. All models, regardless of their age, are equipped with an on-board battery that operates as a backup power source during a power outage. The battery also provides a layer of security if the power lines to your home are ever cut. To remove the battery, locate the plastic latches located at both ends of the alarm panel mounted to your wall and depress them simultaneously. Carefully lift up on the cover at the bottom and gently slide out the back-up battery. Keep in mind that you may need to replace this with fresh batteries in order for any settings you make to remain saved – check with your local Bosch dealer for compatible replacements.

Removing the System

If you want to disconnect your Bosch alarm system, it is important to take certain steps in order to properly remove it. Removal is necessary if you are changing to a different alarm system, or if you want to completely disconnect the system from your home. Follow these steps to safely and correctly disconnect your Bosch alarm system.

Locate the main control panel

Locating the main control panel of your Bosch alarm system is one of the first steps to take prior to disconnecting it. The main control panel for most Bosch systems is generally installed close to an entry point, such as a door or window. This makes it easy for the alarm company’s monitoring service to quickly detect any unauthorized entry into your home. For most systems, the main control panel will have an LED light that indicates its status and will also be used as a way to activate or deactivate the system. The exact location of the main control panel is often included in your system’s manual or you can contact your security provider for assistance in finding it. Once you have located it, you are ready to take the next steps to disconnect your system.

Unscrew the panel from the wall

Removing the Bosch alarm system from your home requires caution and care to ensure proper deactivation and to protect any intact components. Begin by unscrewing the panel from the wall, noting as you do so which component pieces have remained connected. This panel should normally be labeled “Main Panel” or “Control Panel,” but check with each component for more specific instructions. Be sure to remember where each component was located for future reference if you plan on reinstalling the system. Next, unscrew any mounted motion sensors or smoke detectors that may have been attached to other parts of the home’s infrastructure, like ceilings or walls. As you unscrew these components, tag them with permanent marker which wires were connected together and which can be safely disconnected without damaging them or their connectors. After this is done, unplug all cables connecting each component in order to completely isolate it

Disconnect the wiring from the panel

Before you begin, be sure to turn off the system breaker on the fuse box. Once that is done, you are ready to start disconnecting the wiring from the panel. Carefully remove each wire one by one, labeling them as you go so it will be easier to reconnect them during installation of your new alarm system. Double check that all wires have been removed before continuing.

Reconnecting the System

Reconnecting the system is an important part of the process of disconnecting your Bosch alarm system. It requires you to follow certain steps to ensure the system is functioning properly and is safe to use. This guide will take you through the steps needed to reconnect the system, making it easier for you to secure your home or business.

Reconnect the wiring to the panel

Once you have disconnected the wiring from the alarm panel and you are ready to reconnect the system, it is important to make sure that all connections are secure and tight. Start by connecting the live (positive) wire first; this wire should be connected to the terminal labeled COM on the Bosch panel. To complete the connection, use a pair of wire crimpers and ensure that the terminal insert is securely compressed with no visible gaps between it and either of its parts. Next, connect each sensor individually starting with Zone 1. This can be done either by attaching directly to each zone (numbered terminals) on the alarm panel or via a junction box containing 4 x – terminals if required. Once all zones have been connected, reattach all cables going into or out of your control unit, ensuring they all fit securely in place before powering up your Bosch alarm system.

Replace the batteries

When replacing the batteries in a Bosch alarm system, it is important to use only compatible batteries that are fresh and free from damage. After opening the alarm system’s cover, switch off all power sources to ensure none of the system’s components become damaged during the battery replacement process. Next, remove the old batteries from their slots and replace them with new ones that meet your particular model’s specifications. Be sure to ensure that the polarities of each battery are correct; if inserted incorrectly, this can cause malfunctions or damaged components down the line. Once finished, close the system’s cover, reconnect all power sources, and reset your alarm panel in order to re-establish connection between any connected accessories and the main unit.

Turn on the power switch

Once the battery back up is disconnected, rejoining the system requires you to switch on the power supply. This will activate the system and it will remain off until you create your personal code or your installer program a code for you. When it is ready, a green light on the control panel will start to blink. If no light appears, contact your installer to make sure that all relevant wires are connected properly. Once this verification is done, switch on the power again.

Testing the System

Testing the Bosch alarm system should be part of routine maintenance. This will confirm that the system is still functioning properly and is ready to be disconnected. Before disconnecting your Bosch alarm system, you should test the system to ensure everything is working the way it should be. Testing the system can help you identify any problems with the system before you disconnect. Let’s go over the steps for testing the system.

Check the alarm system is functioning correctly

Once you have disconnected the Bosch alarm system, it is important to check that the system is functioning correctly. To do this:

1. Make sure all the wiring is reconnected properly and securely, checking for any signs of damage.
2. Check the indicator lights on your control panel – each of them should be lit up or off depending on the setting.
3. Enter your test code into the control panel and hold for two seconds – if all is working as it should be, you should hear a chime or beep followed by a few short, soft beeps which will signify an arming/disarming sequence, telling you that the alarm system is functioning correctly again.
4. If these steps are successful, your Bosch alarm system has been successfully disconnected and tested and you may now re-enable it if desired.

Test the system with a smoke detector

After you have disconnected your Bosch alarm system, the next step is to test the system to make sure it is functioning correctly. To do this, you need a smoke detector, preferably one that is UL listed for residential security systems and appropriate for use with your specific Bosch model. Install the smoke detector in the area you will be testing, preferably in a place where it will come into contact with smoke particles as quickly as possible. Once installed, activate the smoke detector and check for signals from other devices such as keypads or detectors. You should receive an audible warning from keypads and flashing LED alarms from other detectors. If your alarm does not meet these expectations, then a replacement device may be necessary and further testing or repair by a professional may be required.


Troubleshooting your Bosch alarm system can be tricky. If you’re having trouble connecting or disconnecting your system, you’ve come to the right place. In this section, we’re going to discuss how to disconnect your Bosch alarm system and troubleshoot any issues you might be having. By the end of this section, you should have a better understanding of how to disconnect your Bosch alarm system and tackle any issues. Let’s get started.

Check the wiring is connected correctly

Before attempting any repairs, the first step is always to check the wiring to make sure it is properly connected. To do so, take a look behind the alarm control panel and check that each of the 24-volt terminals has two wires securely connected. The wiring should look something like this:

Primer terminal – two white wires
Terminal 1 – a black wire and silver wire
Terminal 3 – a red wire and purple wire
Tamper terminal – one green wire
EOL terminals are labeled EOL1/EOL2 with a violet (EOL1) and yellow (EOL2) wire wrapped around each respectively. Additionally, there should be no loose ends visible and all terminals should be securely in place covering the ends of all wires. Properly installed 24-volt systems may also have an additional green or yellow-green wires going to the door contacts. If you see any stray strands or frayed ends, this could mean that your wiring is faulty and needs repairs or even replacement.

Check the power switch is on

When troubleshooting your Bosch alarm system, one of the first things to check is if the power switch is on. The Bosch Alarm System components have a built-in power switch that allows you to manually turn off and on power to the panel and other connected devices. If the system is not working, it is likely that the power switch has been set to off. To fix this problem, simply locate the power switch on each component and manually turn them back on again. If necessary, you can open up each device to access any interior switches that may be turned off. Once all switches have been checked, you can test the system to see if it resolves your issue.

Check the batteries are correctly installed

Check the batteries are correctly installed in the control panel, door and window contacts. The batteries should be fresh, alkaline batteries. Before installing your new batteries, take note of the system’s current battery settings. Refer to your alarm system’s user guide for information about specific battery configurations. Any incorrect battery configuration may cause the unit to not function properly or at all, so please check before proceeding.
The Bosch alarm systems use special 3-volt lithium-ion or 2x AA alkaline batteries for main power. The backup battery is a rechargeable lithium ion that requires at least 24 hours of charging before it can be used. If the backup battery has been removed or disconnected from the control panel, it must first be recharged before being able to install it into its place within the system.

How to Disconnect Your Bosch Alarm SystemCheckout this video:

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