How do I replace the battery?

Travel Alarm – Error Messages
July 30, 2019
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Detach the smoke alarm from its mounting base by twisting counter clockwise and remove the old battery. Insert a new battery, making sure that the polarities are correct and the battery is firmly secured within the battery compartment. After replacement, attach the alarm back to the base by twisting that alarm clockwise to click into place. Always test an alarm after replacing the battery.