How can I change the engineers code to my own (Citadel VR8)?
Citadel XR2 upstairs remote?
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citadel xr2 alarm fault. please help!!?
How to reset the tamper function on my Citadel VR8 alarm please?
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Tamper light showing on Citadel vr8 system?
Citadel XR1 how to remove the tamper light so you can operate the alarm?