Hold button and remove all power (including battery and mains power) for 5 seconds. Turn power back on whilst holding down the button, and hold for 5 more seconds. Your alarm panel should now be defaulted.
In situations like this, it is inevitable that an engineer has to be called out from the company, who installed the alarm, to reprogramme the system and set it with a new code.
Whenever a security alarm system is installed, it is set to a default code. The default codes are easy like 0000 or 1234 and many people forget to change it. Changing default codes is very important since many thieves are well aware of the common default codes. The default codes may leave you at high risk.
The master code is the first user code that comes programmed on the panel and it cannot be deleted, but it can and should be changed. The master code allows you to do quite a few things on the alarm system. You can arm and disarm the system and any partition on the system if you are using multiple partitions.
You can reset your wired alarm system by cutting power to the system to turn it off, and then reapplying power to turn it back on. That will perform a power cycle reset for your hardwired panel.
If you have a wireless burglar alarm, it shouldn't cost you anything to remove. That's because you can just unscrew it from the wall yourself. On the other hand, if your burglar alarm is wired in, you'll want a professional to safely disconnect it for you.
Disconnect and Reconnect the Battery:
Ensure the negative (black) terminal is disconnected first and then the positive (red) terminal. Reconnect them in reverse order. This action can reset the vehicle's systems, including the anti-theft system.
The alarm in your home security system is designed to be a deterrent to intruders, as well as alert occupants and draw attention to your home, whether that be from neighbours, passers-by or authorities. Systems will sound for about 5 to 10 minutes, depending on the system, before stopping and automatically re-arming.
The user code is a four-digit number that you or the previous owner of the house set when installing the alarm system. If you don't know your user code, you can try some default codes, such as 0123, 1234, or 9999.
You can power cycle your wired alarm system by dropping both AC and battery power to shut down the system, and then turning it back on by restoring AC power first and then battery power second. This process is more formally known as a power cycle reset. It is often used for troubleshooting.
You must call your monitoring station. Review with your alarm / monitoring company the procedures you expect them to follow when an alarm activates. Put your instructions in writing.
Unplug it. If you have a wireless alarm system, simply take out the backup battery. For a wired alarm, find the control panel and remove the cover to access the backup battery. Unhook the battery to cut power.
Remove the AC power to the home alarm console from the wall directly. Use your console's access key (or another item such as a small screw) to unlock and open the system's backing. Lastly, disconnect at least one of the wires that are attached to the system's main battery, which is blocky and noticeable in most units.
In most cases, current wiring can stay in place as long as it isn't severely damaged. If any of your wiring is outdated, it's best to contact an electrician near you unless you have the specific electrical knowledge and experience required to remove it.
Reset the home security system
Even though you can turn the alarm off on your home security system without assistance, you cannot reset it on your own. Contacting the security company will allow you to have the system reset, although this may mean creating a new security code or pin number.
Older alarm systems usually set and unset with a code. If the previous occupier hasn't left you the code, then it's best to ask an alarm company for help to reset the system and programme in your own personal code. Newer systems often use a setting tag or fob.