Smoke Detector—Replace Batteries
Twist counter-clockwise to remove from base, batteries are 3 AAA Alkaline
Twist counter-clockwise to remove from base and open compartment, battery is CR123A
Help Center Smoke Detector—Replace Batteries
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Twist counter-clockwise to remove from base, batteries are 3 AAA Alkaline
Twist counter-clockwise to remove from base and open compartment, battery is CR123A