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sparky1ste
a couple of months ago i fitted this type of expensive alarm and now the customer phoning up that the 3 smokes arnt working.thoughout the system the smokes is the only thing what talk to each other before going to the receiver board.batterys[cells] have been changed but still doing the same.smokes stopped working individually-thought it might of been fire door but this is not the case.i can reprogramme smokes but only last a few days before the fault happens again any advice welcome thanks.