Citadel XR2 alarm / new sensor

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Citadel XR2 alarm / new sensor

Citadel XR2 alarm / new sensor

Hello everyone,

I have an old Citadel XR2 alarm and the PIR in the large shed is going off randomly during the night, quite often now

I want to replace it for the magnetic door sensor instead so it doesn’t go off unless opened.

I see they are easily available to buy online, but my question is, do you need to turn the mains power off to replace that sensor? I don’t really know much about alarms but I’m worried that the power being off will trigger the alarm and that will be going off for...

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by Cookyweb

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