(2) All ionization smoke alarms sold in this state shall include a "hush" mechanism that allows a person to temporarily disengage the alarm for a period of not more than 15 minutes.
(3) The provisions of this section do not apply to:
(a) Smoke alarms specifically designed for persons who are hard of hearing;
(b) Smoke alarms sold in this state for shipment out of state; or
(c) Smoke alarms sold for installation in recreational vehicles, commercial vehicles, railroad equipment, aircraft, marine vessels or manufactured dwellings.
(4) The sale of a recreational vehicle, commercial vehicle, railroad equipment, aircraft, marine vessel or new manufactured dwelling containing a smoke alarm does not constitute sale of a smoke alarm. [1997 c.647 §2,3; 1999 c.307 §12; 2007 c.70 §274]