Our whole electicity went off last night and when it came back on this morning there is an error message on it which says '5r' and there is a light light. What does this mean as I don't have a manual and how can I can cancel it. In the meantime is it safe to use the alarm? many thanks for your help
I would suggest it said 'Sr' not '5r' that means System Reset (Total power failure)
Turn on/off with your code and that should do it, but, 'Total power failure' means exactly that, the mains went off AND the battery inside the control panel was flat as well.
A new panel battery is required I'm afraid, I expect it is a 12v, 7.0Ah battery that you can get from Maplin
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