Section 3. Application to certain municipalities

1. This chapter shall
  apply to all cities of less  than  three  hundred  twenty-five  thousand
  population and to all towns and villages.
    2.  Whenever  the word "municipality" occurs in this chapter, it shall
  mean a city, town or village to which the chapter is  applicable.    The
  words  "charter,"  "ordinance,"  "resolution,"  "regulation,"  "building
  code," "department of  health,"  "department  of  water  supply,"  "fire
  department,"  "department,"  "board,"  "municipal  engineer,"  "building
  official,"  "corporation  counsel,"  "municipal  treasury,"   or   "fire
  limits,"   shall   be   construed  as  if  followed  by  the  words  "or
  corresponding authority of any municipality in  which  the  dwelling  or
  location referred to is situated."
    3.  Wherever in this chapter the installation or maintenance of a fire
  alarm system, fire detecting system, watchman's clock system,  sprinkler
  system,  fire-escape  system  or  part thereof is required or permitted,
  such system or part thereof shall be  constructed,  installed,  arranged
  and  maintained in a manner satisfactory to the department in accordance
  with rules and regulations adopted by the commission pursuant to section
  three hundred twenty-six of this chapter.