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Kidde Smart Smoke Detector, Wifi, Alexa Compatible Device, Hardwired W/Battery Backup, Voice & App Alerts

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X-Sense Smart Smoke Detector Carbon Monoxide Detector Combo With Replaceable Battery, Wi-Fi Smoke And Carbon Monoxide Detector With Real-Time App

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SITERWELL Smoke Detector, Hardwired Interconnected Smoke Detector, Photoelectric Smoke Alarm With 9V Backup Battery, Fire Alarm With Test/Silence