Syracuse, N.Y., Rev. Gen. Ord. ch. 27 § 27-43

(a) Mandatory smoke detectors. Smoke detectors shall be required to be installed and maintained by the owner or person responsible for all one-family and two-family structures and all residential and residential mixed use dwelling structures and hotels within the city of Syracuse as set forth below:
(b) Smoke detector requirements.
(1) Smoke detectors shall be either photoelectric or ionization type capable of sensing visible or invisible particles of combustion and providing a suitable audible alarm thereof.
(2) Every detector required to be installed and maintained by this section must be installed and located so as to avoid dead air space, be reasonably free from false alarms, and provide visible indication that the alarm is energized.
Exception: Battery operated smoke detectors do not have to provide visual indication that the alarm is energized.
(3) Each detector required to be installed to protect sleeping areas and common areas in existing one-story and two-story, one-family and two-family structures, and existing multiples of less than six (6) units, and existing three (3) story or more owner-occupied one-family and two-family structures may be powered by either battery or AC, otherwise, all detectors required to be installed to protect existing structures shall be directly wired to a single AC power source with no intervening wall switch.
(4) Each detector required to be installed to protect sleeping areas and common areas in all new residential and existing residential mixed use structures shall be directly wired to a single AC power source with no intervening wall switch.
(c) Effective date.
(1) All new residential structures shall comply with the provisions of this section or of the New York State Uniform Fire Prevention and Building Code, whichever is the most restrictive, at the time of construction.
(2) Existing one-family and two-family structures, multiple dwellings, and mixed use residential structures shall comply with the provisions of this section by January 1, 1986.
(d) Installation requirements.
(1) One-story and two-story one-family and two-family structures, multiple dwellings of less than six (6) units, and three-story or more owner-occupied one-family and two-family structures:
a. At least one (1) single-station detector shall be installed at each level within each dwelling unit and to protect each sleeping area. Each detector shall provide an alarm in the unit where installed.
b. Single station detectors shall be installed in the common areas at the highest habitable level and on each floor, story, or level below, including basements, or cellars, and attics which contain mechanical equipment. Detectors shall be located on the ceiling near the base of each stairway.
(2) Three-story or more nonowner occupied one-family and two-family structures, and one-, two-, and three-story multiple dwellings containing at least six (6) and less than twelve (12) units:
a. At least one (1) single-station detector shall be installed at each level within each dwelling unit and to protect each sleeping area. Each detector shall provide an alarm in the unit where installed.
b. Interconnected AC powered detectors shall be installed in the common areas at the highest habitable level and on each floor, story, or level below, including basements, or cellars, and attics which contain mechanical equipment. Detectors to contain or to be connected to an audible alarm capable of being heard within all dwelling units with the doors closed.
(3) Residential mixed use dwelling structures .
a. At least one (1) single-station detector shall be installed at each level within each dwelling unit and to protect each sleeping area. Each detector shall provide an alarm in the unit where installed.
b. An interconnected supervised smoke detection system shall be installed within each non-residential unit and in the common areas at the highest level and on each floor, story, or level below, including basements or cellars, and attics which contain mechanical equipment. Detectors to contain or to be connected to an audible alarm capable of being heard within all dwelling units with the doors closed.
Exceptions:
1. Where the existing mixed use residential structure is composed of a mix of C1/C2 and A1/A2 occupancies, as defined in Part 701 Title 9 Executive (b) of the NYCRR, and having not more than twenty-five hundred (2,500) square feet of commercial floor space, an interconnected, non-supervised, smoke alarm system shall be installed within each non-residential unit and in the common areas at the highest level and on each floor, story, or level below, including basements or cellars, and attics which contain mechanical equipment. Detectors are to contain or be connected to an audible alarm capable of being heard within all units with the doors closed; and
2. Those structures found in compliance with this section prior to July 1, 1993, shall not be required to comply with this section unless a new system is being installed.
(4) All multiple dwellings containing twelve (12) or more units, all four (4) or more story multiple dwellings, and all transient dwellings:
a. At least one (1) single station detector shall be installed at each level within each dwelling unit or guest room and to protect each sleeping area. Each detector shall provide an alarm in the unit where installed.
b. An interconnected supervised smoke detection system shall be installed to protect all common areas such as hallways and stairways, and in basements, utility, heating, and storage rooms, and other spaces so designated by the director. The detection system shall be connected to an audible alarm capable of being heard within all rooms and common areas with the doors closed. A visual zone alarm shall be provided at a designated building entrance to clearly and automatically indicate the location of the alarm.
(5) Detectors and related fire warning equipment shall be installed and wired in accordance with the manufacturer's instructions, the National Electric Code and the applicable NFPA standards.
(e) Inspection/Certification requirements for smoke detection systems.
(1) Once each year, the owner or person responsible for a structure protected by a supervised heat, fire, or smoke detection/alarm system, shall provide the division with a certificate of approval, prepared by a licensed electrician, as provided herein, on a form supplied by the division, certifying that the system has been tested by a licensed electrician and all components of said system are in working order, and that the system is maintaining its intended level of fire safety.
Exception. Those structures, containing more than twenty-four (24) dwelling units, having a trained maintenance staff that follow and document an established written procedure providing for the annual testing, maintenance and replacement of single station smoke detectors located within the dwelling units, shall be allowed to submit the documentation evidencing such periodic testing in lieu of that required herein.
(2) Once each year, the responsible person for a structure which is protected by a required non-supervised inter-connected smoke detection/alarm system or AC powered or battery operated smoke detectors in structures other than those set forth in paragraph (3) shall provide the division with a certification, on a form supplied by the division, certifying that the system has been tested by a licensed electrician and that all detectors in said structure are in working order and are maintaining their intended level of fire safety.
(3) Once each year, the owners of one-story and two-story, one-family and two-family structures shall be required to inspect the smoke detectors installed in their structures to verify that said detectors are in working order and are maintaining their intended level of fire safety, but no certification is necessary for one-family and two-family structures.
(4) Any repair, alteration or modification to a supervised or non-supervised system shall necessitate a recertification of said system upon the completion of the repair, alteration, or modification.
(f) General equipment, installation, and maintenance requirements for smoke detectors and smoke detection systems.
(1) All heat, fire, and smoke detection/alarm equipment installed in the city of Syracuse must meet either the Underwriters Laboratory, Factory Mutual, or other generally accepted testing laboratory specifications, and must be installed and maintained in conformance with the requirements of this section, the New York State Uniform Fire Prevention and Building Code, the applicable NFPA standard and the manufacturers or testing laboratories specifications, whichever is the most restrictive.
(g) All systems, devices and equipment to detect a fire, actuate an alarm, or suppress or control a fire, or any combination thereof shall be maintained in proper operating condition at all times.