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  1. Smoke/CO Detector

    Need more magic rules for smoke and smoke/CO detector. 1. Rule for when smoke detector goes off that the furnace-A/c is shut down triggered by the thermostat.
  2. 3 Way Switches

    First, I have an electrical background and know how 3 way and 4 way switches are wired. Question, Can you buy one Iris GE 3 way switch and replace the existing switch, or do I have to buy three Iris GE 3 way switches to change out my existing 4 way system.