#1 Home Improvement Retailer The Home Depot Logo You're shopping Ellsworth CLOSED | Opens Fri 6 am Delivering to 04605 HomeElectricalFire SafetyCarbon Monoxide Detectors Carbon Monoxide Detectors Battery Powered Hardwired Plug-In Digital Display 10-Year Battery Tamper Resistant Shop Savings 34 Results Sort by:Top Sellers Get It Fast In Stock at Store Today (10) Cumberland & nearby stores Free 2-Day Delivery (19) Next-Day Delivery (11) Availability Hide Unavailable Products Department Electrical Fire Safety Carbon Monoxide Detectors Power Source Battery (20) Plug-In (14) Hardwired (8) Brand Kidde (35) Universal Security Instruments (3) Gentex (2) UEi Test Instruments (2) Review Rating Please choose a rating Alarm/Detector Features Hush Feature (34) Tamper Resistant (24) Battery Back-Up (22) Digital display (19) Value Pack (13) + View All Price to Go $0 - $10 (1) $10 - $20 (4) $20 - $30 (6) $30 - $40 (5) $40 - $50 (3) + View All Pack Size 1 (29) 2 (6) 3 (2) 6 (3) 36 (2) Best Seller KiddeFirex Plug-In Carbon Monoxide Detector, AA Battery Backup, CO Detector Model# 21029713 (929) $1997$29.97 Save $10.00 (33%) Buy More, Save More See Details Pickup 58 in stock at Ellsworth Delivery Free Add To Cart Compare Sponsored KiddeFirex Plug-in Carbon Monoxide, Propane, Natural and Explosive Gas Detector, 9-Volt Battery Backup & Digital Display Model# 21029623 (348) $4997 Pickup 10 in stock at Ellsworth Delivery Free Add To Cart Compare Sponsored KiddeCode One Carbon Monoxide Detector, Battery Powered, CO Detector Shop this Collection Model# 21029508 (210) $1497$16.97 Save $2.00 (12%) Pickup 104 in stock at Ellsworth Delivery Free Add To Cart Compare Top Rated Sponsored KiddeFirex Carbon Monoxide Detector, Battery Operated, CO Detector Model# 21029717 (1665) $1997 Buy More, Save More See Details Pickup 17 in stock at Ellsworth Delivery Free Add To Cart Compare Kidde10 Year Worry-Free Home Fire Safety Kit, Battery Powered Smoke Detector with Voice Alarm & CO Detector Model# 21031033 (553) $7494 Pickup Free ship to store Delivery Free Add To Cart Compare Kidde10 Year Worry-Free Sealed-In Lithium Battery Carbon Monoxide Detector Shop this Collection Model# 21029714 (341) $3997 Pickup 9 in stock at Ellsworth Delivery Free Add To Cart Compare Kidde10 Year Worry-Free Sealed-In Lithium Battery Carbon Monoxide Detector with Digital Display Model# 21029715 (557) $4497 Buy More, Save More See Details Pickup 8 nearby at Bangor | 27.4 mi away Delivery Free Add To Cart Compare Top Rated Sponsored KiddeFirex Battery Operated Carbon Monoxide Detector (6-Pack) Shop this Collection Model# 21029900 (1597) $9900/bundle ($16.50 /unit) Pickup 9 nearby at Bangor | 27.4 mi away Delivery Free Add To Cart Compare KiddeFirex Plug-in Carbon Monoxide Detector, 9-Volt Battery Backup and Digital Display, CO Detector Model# 21029915 (630) $2997 Buy More, Save More See Details Pickup 12 nearby at Bangor | 27.4 mi away Delivery Free Add To Cart Compare KiddeFirex Battery Operated Digital Carbon Monoxide Detector Model# 21030262 (56) $2497 Pickup Unavailable at Ellsworth Delivery Free Add To Cart Compare Kidde10 Year Worry-Free Plug-In Carbon Monoxide Detector with Battery Backup and Digital Display Shop this Collection Model# 21029626 (571) $4997 Pickup 7 in stock at Ellsworth Delivery Free Add To Cart Compare KiddeFirex Carbon Monoxide Detector, Battery Operated with Digital Display, CO Detector, 2-Pack Model# 21027465 (531) $3137 ($15.69 /unit) Pickup Free ship to store Delivery Free Add To Cart Compare 1 2 Showing 1-24 of 34 results. 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