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  2. Driveway alarm - Wikipedia

    en.wikipedia.org/wiki/Driveway_alarm

    A driveway alarm is a device that is designed to detect people or vehicles entering a property via the driveway. A driveway alarm system is often integrated as a component of a system which automatically performs a task or alerts home owners of an unexpected intruder or visitor. Driveway alarms can be a vital component of security, automated ...

  3. Houston, we have a problem - Wikipedia

    en.wikipedia.org/wiki/Houston,_we_have_a_problem

    In the 1995 film Apollo 13, the actual quote was shortened to "Houston, we have a problem".Screenwriter William Broyles Jr. made the change, stating that the verb tense actually used "wasn't as dramatic".

  4. The Mosquito - Wikipedia

    en.wikipedia.org/wiki/The_Mosquito

    The Mosquito or Mosquito alarm is a machine used to deter loitering by emitting sound at high frequency. In some versions, it is intentionally tuned to be heard primarily by younger people. In some versions, it is intentionally tuned to be heard primarily by younger people.