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    Challenger ap28 led meanings

    How would adjust the bell box and tamper switch?
  2. T

    Challenger ap28 alarm going off every 2 hours

    Yesterday I was having a kitchen fitted and 1 of the fitters hit 1 of the sensors removing a cupboard and ever since then the alarm keeps going off random times sometimes 5 minutes other times as long as every 2 hours but never longer! I put the code and then # and stops. So my question is...
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