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Carbon Monoxide Detectors - Blowout Sale! Save up to 68%


Blowout Sale! Up to 68% off on Carbon Monoxide Detectors at Defy Now. Top brands include First Alert, Kidde, Elvicto, Pro-Lab, Universal Security Instruments, instecho, Lecoolife, & THZY. Hurry! Limited time offers. Offers valid only while supplies last.



First Alert Carbon Monoxide Alar Long life 10 Year Alarm with Temperature
First Alert Carbon Monoxide Alar Long life 10 Year Alarm with Temperature
By First Alert
In Stock
$47.97
$32.74
You Save: 32%

mpn: 1, ean: 0029054013019,

4.7 out of 5 stars with 54 reviews


Kidde 900-0235 Nighthawk Carbon Monoxide Alarm, Long Life AC Powered with Battery Backup
Kidde 900-0235 Nighthawk Carbon Monoxide Alarm, Long Life AC Powered with Battery Backup
By Kidde
In Stock
$99.99

mpn: KN-COB-DP-LS, ean: 0047871073085,

4.4 out of 5 stars with 91 reviews
Tamper resist feature unit goes into constant alarm mode if it has been unplugged or has come loose from the outlet. 9V Battery backup provides continuous protection even during power outages. Test/Reset button tests the unit for proper operation and...


Kidde KN-COP-IC Hardwire Carbon Monoxide Alarm with Battery Backup and Digital Display, Interconnectable
Kidde KN-COP-IC Hardwire Carbon Monoxide Alarm with Battery Backup and Digital Display, Interconnectable
By Kidde
In Stock
$58.21

mpn: 21006407, ean: 0032797004909,

4.1 out of 5 stars with 136 reviews
Digital display displays the level of carbon monoxide the unit is sensing. Battery pull tab eliminates battery installation time and keeps battery fresh. Peak level memory displays the highest CO concentration measured since the last reset. Tamper re...


Kidde KN-COB-B-LP2 Carbon Monoxide Alarm
Kidde KN-COB-B-LP2 Carbon Monoxide Alarm
By Kidde
In Stock
$47.07
$14.84
You Save: 68%

mpn: 9CO5-LP2, ean: 5915903622127,

4.9 out of 5 stars with 48 reviews
Safety Products/Fire, Gas & Water Protection. Made in: United States. Dimensions: 11.5 X 11.5 X 7.5. ...


Elvicto Combination Smoke Alarm Carbon Monoxide Detector with 10 Year Battery Operated and Photoelectric Sensor for Home
Elvicto Combination Smoke Alarm Carbon Monoxide Detector with 10 Year Battery Operated and Photoelectric Sensor for Home
By Elvicto
In Stock
$29.99

ean: 0673169933658,

4.5 out of 5 stars with 104 reviews
Product DescriptionCO Alarm density:30ppm,alarms not activate within 120 minutes50ppm,alarms within 60-90 minutes100ppm,alarm with 10-40 minutes300ppm,alarm within 3 minutesstandby current: 85db(3meters)Alarm current:Combination fire alarm/carbon mon...


First Alert GCO1CN Combination Explosive Gas and Carbon Monoxide Alarm with Backlit Digital Display
First Alert GCO1CN Combination Explosive Gas and Carbon Monoxide Alarm with Backlit Digital Display
By First Alert
In Stock
$79.99
$49.41
You Save: 38%

mpn: GC01CN, ean: 0014444627129,

4.9 out of 5 stars with 105 reviews
Versatile CO alarm senses high levels of propane, natural/methane gas, and carbon monoxide. Crisp backlit digital display allows you to view current and peak levels. Can be remotely muted using almost any household remote control. Plugs into any AC o...


First Alert CO511B Wireless Interconnected Carbon Monoxide Alarm with Voice and Location
First Alert CO511B Wireless Interconnected Carbon Monoxide Alarm with Voice and Location
By First Alert
In Stock
$69.99
$35.87
You Save: 49%

mpn: CO511B, ean: 0029054002914,

4.1 out of 5 stars with 37 reviews
The First Alert CO511B Wireless Interconnected Carbon Monoxide Alarm with Voice and Location detects elevated carbon monoxide levels and can work with compatible models to create a wireless alert system throughout your home. Designed for those who wa...


Kidde P4010DCSCO-W 10-Year Worry Free Battery Wireless Combination CO (1) Smoke Alarm, 0, White
Kidde P4010DCSCO-W 10-Year Worry Free Battery Wireless Combination CO (1) Smoke Alarm, 0, White
By Kidde
In Stock
$69.00
$66.53
You Save: 4%

mpn: 21027311, ean: 0047871273119,

4.9 out of 5 stars with 126 reviews
Intelligent Wire-free Smoke and Carbon Monoxide Alarm. Combination Photoelectric Smoke and Carbon Monoxide Alarm. With Voice and Wireless Interconnect Battery Operated. This alarm detects products of combustion using photoelectric technology and carb...


Kidde KN-COU-B Ultra-Sensitive Battery Powered Carbon Monoxide Monitor
Kidde KN-COU-B Ultra-Sensitive Battery Powered Carbon Monoxide Monitor
By Kidde
In Stock
$91.05

mpn: 09942, ean: 0047871099429,

4.5 out of 5 stars with 49 reviews
The Kidde KN-COU-B is a carbon monoxide that indicates to the presence of low CO levels. Samples the air in your home and sounds a loud alarm to warn of life threatening conditions. Will indicate low levels of CO (below 30 PPM) which may have health ...


First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup
First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup
By First Alert
In Stock
$41.99
$18.19
You Save: 57%

mpn: FATCO605, ean: 0029054000729,

4.8 out of 5 stars with 84 reviews
Keep your family safe with this easy-to-use plug-in carbon monoxide alarm; it works with any standard outlet and also has a battery backup for continuous monitoring of Carbon Monoxide levels, even if there's a power failure. Features an advanced ele...


Kidde KN-COB-B-LP Nighthawk Carbon Monoxide Alarm, Battery Operated
Kidde KN-COB-B-LP Nighthawk Carbon Monoxide Alarm, Battery Operated
By Kidde
In Stock
$22.69
$20.10
You Save: 11%

mpn: GID-107540, ean: 5448095773006,

4.0 out of 5 stars with 76 reviews
Battery operated (three AAs included) to provide protection during power outages. Test-reset button tests the unit for proper operation and resets the carbon monoxide alarm. Forty percent longer life than other CO alarms. Seven-year end-of-life warni...


Kidde Twin Value Pack CO Alarm with Digital Display
Kidde Twin Value Pack CO Alarm with Digital Display
By Kidde
In Stock
$39.88
$27.92
You Save: 30%

mpn: N-COPP-B-LS, ean: 0047871267514,

4.9 out of 5 stars with 141 reviews
The Kidde Nighthawk battery operated carbon monoxide alarm is an easy to install unit that provides reliable protection against the dangers of carbon monoxide. Digital display feature adds an advanced level of protection showing CO levels in PPM allo...


PRO-LAB Radon Gas Test Kit
PRO-LAB Radon Gas Test Kit
By Pro-Lab
In Stock
$11.97

ean: 0683431991484,

4.1 out of 5 stars with 10 reviews


Universal Security Instruments MCND401 M Series Plug-In Carbon Monoxide and Natural Gas Alarm with 9-Volt Battery Backup
Universal Security Instruments MCND401 M Series Plug-In Carbon Monoxide and Natural Gas Alarm with 9-Volt Battery Backup
By Universal Security Instruments
In Stock
$49.99
$35.99
You Save: 28%

mpn: MCND401, ean: 0042741004015,

4.0 out of 5 stars with 105 reviews
Universal Security Instruments MCND401 M Series Plug-In Carbon Monoxide and Natural Gas Alarm with 9-Volt Battery Backup offers Single Installation and Double Protection. This compact plug-in alarm is perfect for new or replacement installations. Dua...


Kidde 21010045 C3010 Worry-Free Carbon Monoxide Alarm with 10 Year Sealed Battery
Kidde 21010045 C3010 Worry-Free Carbon Monoxide Alarm with 10 Year Sealed Battery
By Kidde
In Stock
$42.97
$29.99
You Save: 30%

mpn: 21010045, ean: 0784497907973,

4.3 out of 5 stars with 98 reviews
Sealed-in Lithium Battery - Sealed-in lithium power supply; no battery replacement required over the 10 year life of the alarm. Eliminates worry about battery removal or unauthorized deactivation of alarm.. Self Activation - Alarm automatically activ...


Carbon Monoxide Gas Detection,CO Detector Alarm LCD Portable Security Gas CO Monitor,Battery Powered,Alarm Clock Warning (3 AA Battery not included) (UL2034) (White)
Carbon Monoxide Gas Detection,CO Detector Alarm LCD Portable Security Gas CO Monitor,Battery Powered,Alarm Clock Warning (3 AA Battery not included) (UL2034) (White)
By instecho
In Stock
$12.99

ean: 0606682229489,

4.9 out of 5 stars with 69 reviews
【Features】 1.Loud 85 decibel alarm  2.Backlit display  3.Alarm memory feature 4.Low battery indicator  5.Test/Reset button  6.End of unit life warning  7.Power saving feature  8.Easy installation  【Specifications】 Sensor: ele...


Kidde 21025759 Plug In Carbon Monoxide AlarmTamper Resistant
Kidde 21025759 Plug In Carbon Monoxide AlarmTamper Resistant
By Kidde
In Stock
$42.04
$36.51
You Save: 13%

mpn: 21025763, ean: 0047871257591,

4.1 out of 5 stars with 147 reviews
The Nighthawk, AC Powered, Basic Plug In Carbon Monoxide Alarm, With Battery Back Up, Easy To Install, Provides Reliable Protection Against The Dangers Of Carbon Monoxide, Written Information and Instruction, Easy For Anyone To Understand, AC/DC Digi...


Carbon Monoxide Detector Alarm with Digital Display for Home, Travel Portable Battery Operated CO Sensor Alarm/Monitor
Carbon Monoxide Detector Alarm with Digital Display for Home, Travel Portable Battery Operated CO Sensor Alarm/Monitor
By Lecoolife
In Stock
$16.99

mpn: fuhe-1,

4.4 out of 5 stars with 63 reviews
► Why use carbon monoxide monitor? ► What is the risk of carbon monoxide? Carbon monoxide (CO) is the leading cause of accidental poisoning deaths in America, yet many people don't know they are suffering from CO poisoning until its too late....


Universal Security Instruments MCD305SB Carbon Monoxide Smart Alarm with 10 Year Sealed Battery and Display Screen
Universal Security Instruments MCD305SB Carbon Monoxide Smart Alarm with 10 Year Sealed Battery and Display Screen
By Universal Security Instruments
In Stock
$39.99
$29.95
You Save: 25%

mpn: MCD305SB, ean: 0042741303057,

4.4 out of 5 stars with 124 reviews
Nothing is more important than the safety of your family. The Universal Security Instruments MCD305SB Carbon Monoxide Smart Alarm provides 10 years of continuous protection against the threat of carbon monoxide. Universal Security Instruments are the...


Smoke & Carbon Monoxide Alarm, THZY Battery Operated Carbon Monoxide CO Detector with Sound Warning and LED Light Indicator,9V Battery Back-up, White
Smoke & Carbon Monoxide Alarm, THZY Battery Operated Carbon Monoxide CO Detector with Sound Warning and LED Light Indicator,9V Battery Back-up, White
By THZY
In Stock
$19.99

mpn: I900066,

4.9 out of 5 stars with 142 reviews
100% Satisfaction Guarantee - THZY team offers every customer 100% satisfaction guarantee. You can order it without any risks. If you meet any operation difficulties or quality issues, you can contact our professional technical team for help. Please ...



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