View 2 of FIRST ALERT BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup. 3-Pack , White 3-Pack Detector

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View 1 of FIRST ALERT BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup. 3-Pack , White 3-Pack DetectorView 2 of FIRST ALERT BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup. 3-Pack , White 3-Pack DetectorView 3 of FIRST ALERT BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup. 3-Pack , White 3-Pack Detector