Smoke alarms are mandatory under the New York State Property Maintenance Code (see: Section 704.2).

The law says..

The NYS Property Maintenance Code requires a working smoke detector to be installed between each sleeping area and the remainder of the dwelling unit, and where the sleeping areas are served by hallways, the smoke detectors shall be installed in the hallways.

Always remember that a smoke detector should be installed and maintained in accordance with the manufacturer's instructions that accompanied the device. A properly maintained and tested smoke alarm is the best insurance your family can have!

REMEMBER!..
Only a working smoke alarm can save you and your family!