These will generally involve linking to a cellular communication system that maintains the connection should the internet phone line fail. Some systems do provide built-in backup systems for VoIP connected alarms, however. If you are connected to a receiving station via VoIP however, then although the alarm itself will continue to run on battery power, the loss of mains power will usually cut the line of communication with the monitoring centre, because the internet that powers the connection will have failed. If your alarm is connected to an alarm receiving station via a traditional phone line, then the connection will remain operational, and the security control panel will usually continue to function uninterrupted on battery backup power. 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. These are specifically intended to keep a security system up and running during a power cut. Most alarm systems are fitted with backup batteries. Does an intruder alarm still work during a power cut? Here our experts take a look at what happens to various types of intruder alarm when the power goes off, whether you remain safeguarded, and common issues to look out for.
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