View 1 of Firex Hardwired Smoke Detector with Adapters, 9-Volt Battery Backup, and Front Load Battery Door (2-Pack)

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View 1 of Firex Hardwired Smoke Detector with Adapters, 9-Volt Battery Backup, and Front Load Battery Door (2-Pack) View 2 of Firex Hardwired Smoke Detector with Adapters, 9-Volt Battery Backup, and Front Load Battery Door (2-Pack)