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Common Reasons for False Alarms in Security Systems

Having a security alarm installed in your home may offer protection but it can also increase the chances of activating a false alarm. Here are some common reasons why false alarms can be accidentally activated at your home or office.

Human Error

This is by far the major cause of a false alarm. According to statistics, users are responsible for 80% of false alarms. The alarm can be triggered if the user types a wrong password on the keypad. Another reason for the activation of a false alarm is when a user opens a door or window of the house after it has been secured with the alarm. Even leaving a door or window open after activating the alarm may falsely indicate a break-in.


Low Battery

Most alarm systems will give a low battery warning even when the alarm is not set. Some alarms start giving a false alarm signal until the old batteries are replaced with new ones. So, when you see the indication for low batteries, put fresh batteries in your system or ask someone from the company to come over and change the batteries for you.


The batteries will run for 2-5 years so, once you have put in fresh batteries, you will not have to worry about it again for a while.


Air Vents

Security systems sometimes come with ultrasonic motion detection. The slightest movement can trigger a false alarm in your house. So, even the lightest of air drafts can sometimes activate a false alarm.



Many people keep pets in their homes. Pets wander about the whole house and can activate motion sensors that are actually meant for burglars or intruders. Sometimes pets like to push on doors and windows and open them. If an armed door or window within the house moves even slightly, it can trigger a false security alarm.


Installation Issues

A device only operates effectively if it has been installed properly. If company personnel have poorly installed the security system in your house, there are chances that you experience recurrent false alarms. In such a scenario, it is better to inform the company and ask them to send someone over to rectify the issue.


In case your house is undergoing repairs or is being remodeled, there might be a chance that the wiring of the security system is being interfered with. Therefore, it is better to notify the construction workers beforehand so that they can take the necessary actions to adjust the security system accordingly for some time.


Natural Causes

The security alarm can also be set off by natural causes. Rain rattling on doors and windows or heavy winds making their way inside the house through poorly insulated windows and doors may cause the alarm to go off.


Knowing these causes can help us prevent false alarms more easily.


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