(a) No smoke detector shall satisfy the requirements of Section 1640.02 hereof unless it shall bear the label of a nationally recognized testing laboratory.
(b) No detector shall be used unless it is sensitive to both visible and invisible products of combustion. Detectors sensitive to heat only are not acceptable.
(c) No detector shall be used which does not contain an alarm-sounding device rated at a minimum of eighty-five decibels at ten feet and is able to sound this level of warning for a minimum of four continuous minute and in addition be clearly audible in all bedrooms within a dwelling when all intervening doors are closed.
(1982 Code, § 1517.04) (Ord. 77-56. Passed 10-3-1977.)