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In the event of power failure to the premises does a battery backup system continue to protect the user until power is restored?

April 26, 2017backup battery Continue event failure power premises protect system user

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In the event of power failure to the premises does a battery backup system continue to protect the user until power is restored?

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Yes, the dialler has a 9V rechargeable battery backup which usually lasts for some hours and will permit dialling for help during a power blackout. When the power is restored the battery is recharged automatically back to full charge by the dialler ready for the next power failure. This battery should be replaced every 7-10 years.