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BRK First Alert - SC9120LBL Hardwired Smoke & Carbon Monoxide Alarm - – Wholesale Home
Kidde i12010S Kidde I12010SCO AC Hardwired Smoke Alarm – Lighting Supply Guy
Kidde Firex Hardwired Combination Smoke and Carbon Monoxide Detector with Adapters and Voice Alarm 21029718 - The Home Depot
USI MPC122S Hardwired 2-in-1 Photoelectric Smoke & CO Alarm with 10 Year Tamper Proof Sealed Battery Backup
Siterlink Hardwired Interconnected Smoke Detector Carbon Monoxide Detector Combo, 2 in 1 Smoke and CO Detector with 2 AA Batteries Back Up, AC Smoke and CO Alarm, Voice Alert, Self-Check, 1 Pack - Amazon.com