4. Upon selection of a multiple dwelling pursuant to paragraph 1 of this subdivision, the department shall post a notice in each of the designated citywide languages in section 23-1101 in a prominent place of such multiple dwelling, notifying tenants of the requirements of this section, a tenant’s option to refuse the installation of such device in their dwelling unit, the requirement of twice monthly inspections by the department, and a tenant’s option to call 311 to file a complaint relating to inadequate heat and to check the department’s website for the issuance of heat violations. The department shall monitor that such notice is posted throughout the time period that such multiple dwelling is subject to inspection by the department pursuant to paragraph 2 of this subdivision.
5. The tenant of each dwelling unit in a class A multiple dwelling in which an internet capable temperature reporting device has been provided and installed by the owner pursuant to this section shall:
(a) Keep and maintain such device in good repair; and
(b) Replace any such device that is stolen, removed, found missing or rendered inoperable during such tenant's occupancy of such dwelling unit, except that the owner may make such replacement and charge such tenant a maximum of $50 for the cost of each such replacement.
6. The owner may not charge the tenant of a dwelling unit for the acquisition or installation of an internet capable temperature reporting device, nor for the replacement of such device where the replacement is due to wear or malfunction or pursuant to subparagraph (c) or subparagraph (d) of paragraph 3 of this subdivision, except as provided in subparagraph (b) of paragraph 5 of this subdivision.