#1 Home Improvement Retailer The Home Depot Logo You're shopping Ellsworth OPEN until 9 pm 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 (6) Ellsworth & nearby stores Next-Day Delivery (6) 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 Alarm/Detector Features Hush Feature (34) Tamper Resistant (24) Battery Back-Up (22) Digital display (19) Value Pack (13) + View All Price 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 Power Source Plug-In Pack Size 1 Features Battery Back-Up Commercial/Residential Residential Alarm Type Carbon Monoxide 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 Power Source Plug-In Pack Size 1 Features Battery Back-Up Commercial/Residential Residential 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%) Power Source Battery Pack Size 1 Features Hush Feature Commercial/Residential Residential Alarm Type Carbon Monoxide 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 Power Source Battery Pack Size 1 Features Hush Feature Commercial/Residential Residential Alarm Type Carbon Monoxide Pickup 19 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 Power Source Battery Pack Size 1 Features 10-Year Battery Commercial/Residential Residential 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 Power Source Battery Pack Size 1 Features 10-Year Battery 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) Power Source Battery Pack Size 6 Features Value Pack Commercial/Residential Residential 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 Power Source Plug-In Pack Size 1 Features Battery Back-Up 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 Power Source Battery Pack Size 1 Features Digital display Commercial/Residential Residential 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 Power Source Plug-In Pack Size 1 Features 10-Year Battery 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) Power Source Battery Pack Size 2 Features Digital display Pickup Free ship to store Delivery Free Add To Cart Compare 1 2 Showing 1-24 of 34 results. Customers Ultimately Purchased ... Kidde Firex Plug-in Carbon Monoxide Detector, 9-Volt Battery Backup and Digital Display, CO Detector (630) $2997 Add To Cart Kidde Firex Carbon Monoxide Detector, Battery Operated, CO Detector (1665) $1997 Add To Cart Kidde Firex Plug-in Carbon Monoxide, Propane, Natural and Explosive Gas Detector, 9-Volt Battery Backup & Digital Display (348) $4997 Add To Cart Kidde 10 Year Worry-Free Plug-In Carbon Monoxide Detector with Battery Backup and Digital Display (571) $4997 Add To Cart Kidde Firex Carbon Monoxide Detector, Battery Operated with Digital Display, CO Detector, 2-Pack (531) $3137 Add To Cart Kidde 10 Year Worry-Free Sealed-In Lithium Battery Carbon Monoxide Detector (341) $3997 Add To Cart Kidde Code One Carbon Monoxide Detector, Battery Powered, CO Detector (210) $1497 Was $16.97 Add To Cart Sponsored Products Klein Tools #1 Square, 6 in. Round Shank Slim-Tip 1000-Volt Insulated Screwdriver $1499 Add To Cart Klein Tools #2 Phillips, 6 in. Slim-Tip 1000-Volt Insulated Screwdriver $1586 Add To Cart Intermatic NightFox 1,000-Watt LED/Incandescent Stem and Swivel Electronic Photocontrol, Gray (89) $1998 Add To Cart Intermatic T1900 Series 20 Amp 24-Hour Heavy Duty Mechanical Time Switch with Steel Indoor Enclosure - Gray $14535 Add To Cart Intermatic 15 Amp In-Wall Digital Auto Shut-Off Timer (15) $3579 Add To Cart Intermatic T100 Series 40 Amp 24-Hour Indoor Mechanical Timer with Double Pole Single Throw Switching 240 VAC, Gray (117) $7697 Add To Cart Intermatic T1970 Series 20 Amp 24-Hour Mechanical Time Switch with Skipper and Steel Outdoor Enclosure - Gray $21803 Add To Cart How doers get more done™ Need Help? 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