Kidde 4010 Series Teardown/Battery Replacement. 10 Year "Worry Free" Wireless Alarms - iFixit Repair Guide
![Kidde 10-Year Worry Free Smoke & Carbon Monoxide Detector, Hardwired with 10 Year Battery Backup & Voice Alarm 21029879 - The Home Depot Kidde 10-Year Worry Free Smoke & Carbon Monoxide Detector, Hardwired with 10 Year Battery Backup & Voice Alarm 21029879 - The Home Depot](https://images.thdstatic.com/productImages/801fbe37-976e-4480-ba6a-418b2f2abd54/svn/kidde-smoke-and-carbon-monoxide-detectors-21029879-64_1000.jpg)
Kidde 10-Year Worry Free Smoke & Carbon Monoxide Detector, Hardwired with 10 Year Battery Backup & Voice Alarm 21029879 - The Home Depot
![Kidde Smoke Detector, 9-Volt Battery Operated, Ionization Smoke Alarm, Battery Included - Fire Alarm Battery Operated - Amazon.com Kidde Smoke Detector, 9-Volt Battery Operated, Ionization Smoke Alarm, Battery Included - Fire Alarm Battery Operated - Amazon.com](https://m.media-amazon.com/images/I/51djOpVIgBL._AC_UF894,1000_QL80_.jpg)
Kidde Smoke Detector, 9-Volt Battery Operated, Ionization Smoke Alarm, Battery Included - Fire Alarm Battery Operated - Amazon.com
![Kidde KN-COSM-XTR-B (900-0216) (KN-COSM-XTR-BA) (21008700) Intelligent Alarm, Battery Operated Combination Carbon Monoxide, Fire and Smoke Alarm Kidde KN-COSM-XTR-B (900-0216) (KN-COSM-XTR-BA) (21008700) Intelligent Alarm, Battery Operated Combination Carbon Monoxide, Fire and Smoke Alarm](https://cdn3.volusion.com/krfyq.gnkuo/v/vspfiles/photos/Kidde-KN-COSM-XTR-B-2.jpg?v-cache=1430494577)
Kidde KN-COSM-XTR-B (900-0216) (KN-COSM-XTR-BA) (21008700) Intelligent Alarm, Battery Operated Combination Carbon Monoxide, Fire and Smoke Alarm
![Kidde KN-COSM-BA Battery-Operated Combination Carbon Monoxide and Smoke Alarm with Talking AlarmShop Smoke Alarms, Carbon Monoxide Detectors, Combo Alarms, Fire Extinguishers - By Kidde Kidde KN-COSM-BA Battery-Operated Combination Carbon Monoxide and Smoke Alarm with Talking AlarmShop Smoke Alarms, Carbon Monoxide Detectors, Combo Alarms, Fire Extinguishers - By Kidde](https://shopkidde.com/images/thumbs/0000089_kidde-kn-cosm-ba-battery-operated-combination-carbon-monoxide-and-smoke-alarm-with-talking-alarm_550.jpeg)
Kidde KN-COSM-BA Battery-Operated Combination Carbon Monoxide and Smoke Alarm with Talking AlarmShop Smoke Alarms, Carbon Monoxide Detectors, Combo Alarms, Fire Extinguishers - By Kidde
![Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnect, Test-Silence Button - - Amazon.com Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnect, Test-Silence Button - - Amazon.com](https://m.media-amazon.com/images/I/41mubFCNxYL._AC_UF894,1000_QL80_.jpg)
Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnect, Test-Silence Button - - Amazon.com
![Kidde Smoke Detector, Battery Operated Smoke Alarm with Safety Light, Test-Hush, White - - Amazon.com Kidde Smoke Detector, Battery Operated Smoke Alarm with Safety Light, Test-Hush, White - - Amazon.com](https://m.media-amazon.com/images/I/71PMeRqIYKL.jpg)
Kidde Smoke Detector, Battery Operated Smoke Alarm with Safety Light, Test-Hush, White - - Amazon.com
![Kidde Firex Smoke Detector, Battery Operated with Front-Load Battery Door, Smoke Alarm 21029922 - The Home Depot Kidde Firex Smoke Detector, Battery Operated with Front-Load Battery Door, Smoke Alarm 21029922 - The Home Depot](https://images.thdstatic.com/productImages/91a6aabc-f87a-46c2-9558-3d755381fbf5/svn/kidde-battery-smoke-detectors-21029922-64_1000.jpg)