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BRK Hardwired (with Battery Backup) Ionization Interconnected Combination Smoke and Carbon Monoxide Detector

First Alert BRK Hardwired (with Battery Backup) Ionization Interconnected Combination Smoke and Carbon Monoxide Detector

4.5
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64 Questions
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I have two just smoke detectors and one smoke and carbon monoxide detectors hardwired. Two have green lights and one is blinking red every 2 seconds