SECTION 1. Chapter 148 of the General Laws is hereby amended by striking out section 26D, as appearing in the 2008 Official Edition, and inserting in place thereof the following section: 

               Section 26D. (a) Notwithstanding any general or special law to the contrary and without regard to the date of construction, every existing 1 or 2 family building or structure and every existing building or structure containing more than 1, but fewer than 6 dwelling units, occupied in whole or in part for residential purposes shall, upon sale or transfer of such building or structure, be equipped by the seller with approved smoke detectors in accordance with the rules and regulations of the board of fire prevention regulations. The head of the fire department shall inspect such building or structure at the time of sale or transfer for compliance with this section.

               (b) The rules and regulations of the Board of Fire Prevention Regulations, established in accordance with this section, may require the upgrade, installation or replacement of smoke detector devices based upon advances in smoke detection technology; provided, however that, in any building or dwelling unit constructed prior to January 1, 1975 which has not undergone an alteration or change of use since January 1, 1975 which would require it to comply with the smoke detector provisions of the State Building Code, the installation of approved monitored battery power smoke detectors shall be allowed; and, provided further, that  the relocation or addition of any smoke detector device or the relocation or addition of any power supply wire associated with such smoke detector device, if such device location or wire location was installed in accordance with the requirements of the State Building Code in effect as of the date of such installation, shall not be required.

               For purposes of this section, “Approved monitored battery power smoke detector”, shall be a smoke detector which is activated by a battery power source provided that the battery is monitored to assure that the following conditions are met:

                    (i) a distinctive audible trouble signal is given before the battery is incapable of operating the device for alarm purposes, and that such audible trouble signal is produced at least once every minute for seven consecutive days, and

                    (ii) the unit is capable of producing an alarm signal for at least four continuous minutes at the battery voltage at which a trouble signal is normally obtained followed by seven days of trouble signal operation, and

                    (iii) the monitored batteries meeting these specifications are clearly identified on the unit near the battery compartment.

               (c) The head of the fire department shall enforce this section.

               (d) Nothing in this section shall abrogate the authority of the state board of building regulations and standards to regulate smoke detector requirements for the construction of new buildings and for existing buildings undergoing repair, alteration, addition or change of use.

               SECTION 2. Section 10A of said chapter 148, as so appearing, is hereby amended by striking out, in line 15, the figure “26F” and inserting in place thereof the following figure:  26D.

               SECTION 3. Sections 26E and 26F of chapter 148 of the General Laws are hereby repealed.