Reasons Behind Alarm Ringing During Power Cuts

The choice of an alarm system should be based on your specific security needs, the typical response of your community to alarms, and how actively involved you want to be in monitoring your property. Here are some considerations:

Backup Battery Failure: Alarm systems are equipped with a main control box, which houses a large lead-acid battery. This battery serves as a backup power supply. If this backup battery is dead or failing, it will not be able to keep the system running when the mains power is cut off. As a result, the external siren may activate to alert you to the power failure and the ineffective backup battery.

External Siren Battery: In addition to the main backup battery, there is usually a smaller battery inside the external siren. This battery is specifically designed to power the siren in cases of mains power failure or if the siren's wiring is tampered with or cut. If the main alarm system’s battery is depleted, the siren’s battery takes over, causing the alarm to sound.

How to Stop the Alarm from Ringing

Internal Alarm Notification: If you hear a beeping or a continuous tone from the keypad or the main alarm box inside your property during a power cut, you can usually silence it by entering your code. This action acknowledges the power cut and switches the system to operate on the backup battery.

External Alarm Siren: If the external alarm siren is ringing during a power outage, it is a clear indicator that the internal backup battery needs to be replaced. Typically, the alarm should only sound for about 20 minutes before shutting off, as most systems are designed to prevent prolonged noise pollution.

Replacing the Backup Battery

To replace the battery in your alarm system, you may need to contact a professional unless you are confident in handling electronic systems. The process generally involves:

• Opening the main control box, which is usually located in a cupboard or closet.
• Safely disconnecting the old battery and replacing it with a new one.
• Ensuring that the new battery is properly connected and that the system is functioning correctly.

Neighbor's Alarm Issues

If it's a neighbor’s alarm that frequently goes off during power cuts, consider sharing this information with them. A polite conversation or sharing helpful tips (like this article) on community platforms or social media might encourage them to maintain their alarm system better.

Preventive Measures

Regular maintenance checks can prevent such issues. It is advisable to check the health of your alarm system's batteries at least once a year and replace them as needed.

Stay informed about the type of alarm system installed and familiarize yourself with basic troubleshooting steps to manage minor issues independently.

How to Replace the Main Battery in Your Alarm System

Replacing the main battery in your home alarm system is a critical maintenance task that ensures your system remains operational during power outages. Here's a step-by-step guide to safely replace the battery, suitable for a competent DIY person or an electrician. If you're not confident in performing this task or have a maintenance contract, it's advisable to let a professional handle it.

Safety First: Isolating the Power

• Isolate the Power Supply: Before you begin, ensure that the power supply to the control box is completely isolated. This could be as simple as turning off the plug top that feeds the main control box or switching off a fused spur if available.

Opening the Control Box

• Access the Control Box: Once you've ensured that the power is off, unscrew the lid of the control box. Be prepared for the tamper switch to trigger the internal sounder once the lid is removed.
• Deactivate Tamper Alarm: You can silence the alarm triggered by the tamper switch by entering your code on the keypad.

Replacing the Battery

• Locate the Battery: Inside the control panel, you'll find the battery which typically is a lead-acid type. Ignore the other wires and components; focus only on the battery which usually has two leads attached to it.
• Disconnect Old Battery: Remove the fly leads connected to the battery terminals. These are often attached with spade connectors. Hold the connector firmly as you pull each lead off.
• Install New Battery: Connect the fly leads to your new battery, ensuring that the connections are secure. It's crucial to use the correct replacement battery, matching both the voltage (typically 12v) and amp-hour rating.

Reassembling and Testing

• Close the Control Box: Reattach the lid of the main control box, ensuring that the tamper switch is not activated again. If it is, you can silence it by entering your code again.
• Restore Power: Once the lid is securely fastened, turn the power back on at the source.
• Reset the System: At the keypad, press the reset button to clear any tamper alerts triggered during the process.

Post-Maintenance Checks

• Test the Alarm: After replacing the battery and resetting the system, test the alarm to ensure it functions correctly without triggering the external siren during a power cut.
• Battery Life: Alarm system batteries typically last about 5 years. It's good practice to mark the date of replacement and monitor the system's health regularly.

Troubleshooting Post-Power Cut Issues

If your alarm fails to function correctly after a power cut:

• Simple Reset: Often, entering your master code or pressing the 'reset' button on the keypad can revive the system.
• Check for Damage: If the reset does not work, the control panel might have been damaged, possibly from an electrical surge. In such cases, a professional assessment may be necessary.
• Contact a Professional: If you're unsure of the next steps, refer to the alarm box's branding or contact information for professional help. They can provide specific guidance and service if needed.