If the system does activate, entering your code, presenting your fob or pressing the 'un-set' button on your wireless fob will stop the alarm. The system will then tell you the sensor that activated. Try to find out why this happened. For instance, could it be one of the reasons in 'How to Prevent False Alarms'?

If there is no explanation then give your security company a call as they may need to adjust the sensitivity of the detector.

If you use a mobile app then you may be able to turn the system off from this. At the same time, you can check the log to see the detector that has activated.

Be careful turning off the system without knowing what has happened as the activation could be a genuine intruder!