(6) Failure to install approved smoke detectors in each dwelling unit, to include mobile homes, under the landlord’s control. Upon commencement of a rental agreement, the landlord shall verify that smoke detectors have been installed and are in good working order in the dwelling unit. The tenant shall maintain the smoke detectors in good working order during the tenant’s rental period. For purposes of this section, an approved smoke detector is a battery-operated device that is capable of detecting visible or invisible particles of combustion and that bears a label or other identification issued by an approved testing agency having a service for inspection of materials and workmanship at the factory during fabrication and assembly. If the landlord or the landlord’s assignee fails to install working smoke detectors, the tenant may send written notice by certified mail, return receipt requested, to the landlord or the landlord’s assignee that if working smoke detectors are not installed within seventy-two (72) hours of receipt of the letter, the tenant may install smoke detectors and deduct the cost from the tenant’s next month’s rent. Smoke detectors purchased by the tenant and deducted from rent become the property of the landlord and shall not be removed from the premises.