Go to your main control box and disconnect the battery supply, which will stop all beeping and shut your alarm system down. Once power is restored, you can reconnect your battery and your alarm system should work as before.
Battery Backup: Many alarm systems have a backup battery. Look for the backup power source within the control panel or nearby. Disconnecting or removing the backup battery might silence the alarm.
During a power outage, some systems begin to beep when the AC power is turned off or turned back on. If your system is beeping, the condition needs to be “acknowledged” through the keypad.
You will need to turn the mains of to the control panel, whether at a spur or remove the fuse inside the panel, unplug the leads from the battery inside the panel and also the battery inside the external sounder. This will shut the system down.
If your burglar alarm does go off during a power outage, this isn't normal! It is not programmed to activate. A well serviced alarm system should operate perfectly on battery back-up for at least 12 hours, depending upon the system's complexity and the state of the battery.
Unplug the alarm panel box's power supply and battery. You can usually find these in a utility closet, basement, or garage. Look for a metal box, usually gray. Once your box has powered down, plug back in.
Most systems will begin beeping or chirping as a result of a total power outage or failure to recharge the system backup battery. For many of our most popular systems, beeping alarms and low battery trouble beeps can be silenced by pressing the [OFF] or [#] buttons from the keypad.
Inside this box is a large lead acid battery, used as a backup power supply. 98% of the time an alarm rings during a power cut is because this battery is dead!
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.
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.
Your home security system likely has a main source of power, which is a box that is secured to the wall with an outlet. This box is the key to turning off the alarm while there is no electricity. Simply disconnect the box from the outlet by unplugging it.
Go to your main control box and disconnect the battery supply, which will stop all beeping and shut your alarm system down. Once power is restored, you can reconnect your battery and your alarm system should work as before.
Your Base Station includes a battery backup that allows your system to keep working if the power goes out or your Base Station is accidentally unplugged.
If that power suddenly becomes unavailable, many systems provide backup batteries to keep the keypad and alarm operational. In many cases, this sounds like great news for homeowners. However, it's important to note that many backup batteries only last four to six hours before they need recharging.
Disarm the alarm system
The process for doing this differs for each system, but one of the following is usually recommended: Enter the passcode and disarm. Arm the system, and then disarm it, immediately. Press the status button on the keypad.
Hardwired Smoke Alarms
Locate the main breaker panel for your home. Identify which circuit breaker powers your smoke alarms. Each breaker should be labeled, so look for something that says “smoke alarm” or something similar. Turn off the circuit breaker for your smoke alarms.
Power Down
Unplug the power supply and battery in the alarm panel box. These are usually located in, or around: A utility closet.
Most alarm systems are fitted with backup batteries. These are specifically intended to keep a security system up and running during a power cut. The battery backup is designed to kick in automatically as mains power fails, so you won't have to worry about switching it over yourself.
Most smoke detector and fire alarm models will include a “silence” function. Press this, and the beeping will stop. If the smoke detector/fire alarm continues to pick up on smoke after a short period has elapsed, the beeping noise will start again to ensure your safety.