Hazard detector contained within a fixture serving an unrelated purpose

A system, comprising:

• a fixture installed in a wall or a ceiling of a building, the fixture to serve a purpose unrelated to hazard detection;
• a hazard detector having dimensions that fit substantially within the fixture and attached to the fixture such that the hazard detector is contained substantially within the fixture;
• and
• a control circuit communicatively coupled to the hazard detector and configured to:
• receive a signal from the hazard detector;
• detect an unsafe condition based on the signal;
• and
• raise an alarm in response to the unsafe condition.

A method, comprising:

• receiving a signal from a hazard detector having dimensions that fit substantially within a fixture installed in a wall or a ceiling of a building and attached to the fixture such that the hazard detector is contained substantially within the fixture, the fixture to serve a purpose unrelated to hazard detection;
• detecting an unsafe condition based on the signal;
• and
• raising an alarm in response to the unsafe condition.