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BRK Electronics SC9120B/SL177 Kit - Hard Wired T3 Smoke/ T4 Carbon Monoxide Ionization Alarm with Strobe
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FIRST ALERT BRK CO5120BN Hardwired Carbon Monoxide (CO) Detector with Battery Backup , White - Household Alarms And Detectors - Amazon.com
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FIRST ALERT BRK CO5120BN Hardwired Carbon Monoxide (CO) Detector with Battery Backup , White - Household Alarms And Detectors - Amazon.com
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