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Probably look at it in amazment, then lay down my laptop and walk around the house to see where it was coming from. Not exactly the safest procedure is it?
I would look to see what the problem was sometimes it's not a fire that sets the alarm off. And if it was a fire I'd get my fire extinguisher.
If your structure isn't prewired, you would have to go some re-wiring. You need a four wire run, +/-/data/ground. They will work on battery only, not connected together
Assuming something obvious, like burning something in the oven, wasn't the apparent cause 1. I'd immediately make sure I knew where everyone was at and have them gather near an exit. 2. Investigate the cause of the alarm. Check all of the detectors and try to determine which one has sensed an alarm condition. 3. If there is no sign of fire, I'd reset the alarm and fan/vacuum the detector. 4. Obviously is there was a fire, I'd grab the extinguisher and attempt to put it out while someone else called 911. 5. Have other family members evacuate until the situation was safe. 6. Leave myself if I can do no more good or my own life became threatened. (Grabbing my wallet, cell phone, and car keys on the way out the door, if I could safely get them.)
walk casually around the house looking for the fire