### Question
How is the "smoke detectors" defined?


### Answer
The term **smoke detectors** is defined in *15 U.S.C. § 2227* as follows -

> single or multiple station, self-contained alarm devices designed to respond to the presence of visible or invisible particles of combustion, installed in accordance with the National Fire Protection Association Standard 74 or any successor standard thereto

#### Citation:
  - *15 U.S.C. § 2227*
  - Heading: **CHAPTER 49-FIRE PREVENTION AND CONTROL**

