How to replace battery in first alert smoke detector p1210

Check for bugs, debris, or dust in the sensing chamber. The inside of the alarm might have been triggered by hidden dust, dirt, or spiderwebs. Regular cleaning prevents most nuisance alarms. Clean the detector with a can of compressed air and your vacuum's soft brush attachment, and reinstall the alarm.

Product: P1210 / PR710 / PR710B. Why Replace Smoke Alarms Every 10 Years? Learn why the NFPA recommends that smoke alarms be replaced every 10 years (at least).

Unlock the battery drawer To unlock the batteries, insert a flathead screwdriver under the head of the locking pin, and gently pry it out of the battery compartment lock. (If you plan to re-lock the battery compartment, save the locking pin.)