Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup, Interconnectable, LED Warning Light Indicators

24/7 Self-testing components are always checking the device to ensure it's operating as expected (not a substitute for a manual push test) Easy

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Kidde Firex Battery Operated Digital Carbon Monoxide Detector 21030262 - The Home Depot

Kidde Smoke Detector, Hardwired Smoke Alarm with Battery Backup Includ — CHIMIYA

Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup, Interconnectable, LED Warning Light Indicators

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Kidde Hardwired Interconnectable Carbon Monoxide Alarm with Alkaline Backup Battery 21006406

Hardwired Smoke & Carbon Monoxide Detector

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Product 1: Industry First: 2-in-1 Detection - Smoke detector & Indoor Air Quality Monitor combo alerts you to both smoke & indoor air quality hazards,

Kidde Smart Smoke Detector & Indoor Air Quality Monitor, WiFi & Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup, Interconnectable, LED