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Extended smoke alarm system

  • US 8,258,969 B1
  • Filed: 02/15/2011
  • Issued: 09/04/2012
  • Est. Priority Date: 07/23/2007
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a detector including a computing system supporting at least wireless-signal-sending functionality and configured to detect the presence of a particular stimulus; and

    a portable device having at least wireless-signal-receiving functionality;

    wherein, on detecting the presence of the particular stimulus, the detector transmits a wireless activation signal that is transmitted to and received by the portable device and thereby activates projection of light from the portable device in response to receipt of the wireless activation signal by the portable device.

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