Smoke Detector compliance changes: Effective 7/1/14, a battery operated smoke alarm will not be legal unless it contains a non-replaceable, non-removable battery that powers the smoke alarm for at least 10 years. Effective 7/1/15, smoke alarms must: (1) displace the manufacturing date; (2) provide a location on the smoke detector to state the installation date; and (3) Have a “hush” feature.