Change Your Clock...Change Your Smoke Alarm Battery

On Sunday, March 11, Daylight Saving Time will begin. As you prepare to turn your clocks forward one hour, the White Plains Fire Department urges you to change the battery in your smoke alarm at the same time.

Is your smoke alarm still working?

Smoke alarms must be maintained—smoke alarm with a dead or missing battery is the same as having no smoke alarm at all.

A smoke alarm only works when it is properly installed and maintained. Depending on how your smoke alarm is powered (9-volt, 10-year lithium, or hardwired), you’ll have to maintain it according to manufacturer’s instructions.

General guidelines for smoke alarm maintenance:

Smoke alarm powered by a 9-volt battery

• Test the alarm monthly.
• Replace the batteries when you change your clock.
• The entire smoke alarm unit should be replaced every 8-10 years.

Smoke alarm powered by a 10-year lithium (or “long life”) battery

• Test the alarm monthly.
• Since you cannot (and should not) replace the lithium battery, the entire smoke alarm unit should be replaced according to manufacturer’s instructions.

Smoke alarm that is hardwired into the home’s electrical system

• Test the alarm monthly.
• The backup battery should be replaced when you change your clock.
• The entire smoke alarm unit should be replaced every 8-10 years.