System Sensor Co Detector(28)
Uses item details. Price when purchased online
X-Sense Smoke and Carbon Monoxide Alarm Combo, 10-Year Battery Powered Detector, UL 217 & UL 2034 Certified, SC07, 1-Pack From $39.99

2 options
Available in additional 2 optionsFrom$3999
X-Sense Smoke and Carbon Monoxide Alarm Combo, 10-Year Battery Powered Detector, UL 217 & UL 2034 Certified, SC07, 1-Pack
1194.7 out of 5 Stars. 119 reviews
Kidde Hardwired Interconnectable Smoke and Carbon Monoxide Detector with AA Battery Backup and Voice Alerts $53.00

$5300
current price $53.00Kidde Hardwired Interconnectable Smoke and Carbon Monoxide Detector with AA Battery Backup and Voice Alerts
903.7 out of 5 Stars. 90 reviews
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Usi 3-In-1 Tamper Proof Smoke, Fire, And Carbon Monoxide Smart Alarm With 10 Year Sealed Battery Back-Up, Hardwired $109.99

$10999
current price $109.99Usi 3-In-1 Tamper Proof Smoke, Fire, And Carbon Monoxide Smart Alarm With 10 Year Sealed Battery Back-Up, Hardwired
134.2 out of 5 Stars. 13 reviews
Smart Sensor Gas Analyzers, Handheld Carbon Monoxide Meter, Tester Monitor Detector Gauge LCD Display Sound Light Alarm ,Hand & Power Tool $79.72

$7972
current price $79.72Smart Sensor Gas Analyzers, Handheld Carbon Monoxide Meter, Tester Monitor Detector Gauge LCD Display Sound Light Alarm ,Hand & Power Tool
X-Sense 2.4GHz Wi-Fi Smart Home Hub & Base Station, Connect Up to 50 Devices for Home Safety Network, SBS50 Was $29.99

X-Sense 2.4GHz Wi-Fi Smart Home Hub & Base Station, Connect Up to 50 Devices for Home Safety Network, SBS50
364.8 out of 5 Stars. 36 reviews
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Siterwell AA Battery Operated Carbon Monoxide Detector, Electrochemical sensor,Portable for Travel home,4-pack From $69.99

2 options
Available in additional 2 optionsFrom$6999
Siterwell AA Battery Operated Carbon Monoxide Detector, Electrochemical sensor,Portable for Travel home,4-pack
1174.5 out of 5 Stars. 117 reviews
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SITERWELL Hardwired Interconnected Smoke Detector Carbon Monoxide Detector Combo with 2 AA Batteries Back Up, 2 in 1 Smoke and CO Detector with Voice Alert, Smoke and CO Alarm with Self-Check, 5 Pack From $45.99

3 options
Available in additional 3 optionsFrom$4599
SITERWELL Hardwired Interconnected Smoke Detector Carbon Monoxide Detector Combo with 2 AA Batteries Back Up, 2 in 1 Smoke and CO Detector with Voice Alert, Smoke and CO Alarm with Self-Check, 5 Pack
264.5 out of 5 Stars. 26 reviews
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Knox Safety Plugin Carbon Monoxide Detector, Voice Alert & LCD Display, 10-Year Battery Backup From $51.00

3 options
Available in additional 3 optionsFrom$5100
Knox Safety Plugin Carbon Monoxide Detector, Voice Alert & LCD Display, 10-Year Battery Backup
1894 out of 5 Stars. 189 reviews
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First Alert BRK SC9120B 85-Decibel Ionization Hardwired Smoke and Electrochemical Carbon Monoxide Detector with Battery Backup

First Alert BRK SC9120B 85-Decibel Ionization Hardwired Smoke and Electrochemical Carbon Monoxide Detector with Battery Backup
3294.6 out of 5 Stars. 329 reviews
First Alert Direct Wire Combination Smoke And Carbon Monoxide Detector, 120 Volt With 9 Volt Battery Back Up - 12 Pack $889.95

$88995
current price $889.95First Alert Direct Wire Combination Smoke And Carbon Monoxide Detector, 120 Volt With 9 Volt Battery Back Up - 12 Pack
Kidde Kitchen Combination Smoke Carbon Monoxide Alarm 10-Year Lithium Battery $51.00

$5100
current price $51.00Kidde Kitchen Combination Smoke Carbon Monoxide Alarm 10-Year Lithium Battery
1843.2 out of 5 Stars. 184 reviews
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First Alert CO710 Carbon Monoxide Detector with 10-Year Battery and Digital Temperature Display. 10 Pack. $419.90

$41990
current price $419.90First Alert CO710 Carbon Monoxide Detector with 10-Year Battery and Digital Temperature Display. 10 Pack.
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First Alert SC9120B Direct Wire Combination Smoke and Carbon Monoxide Detector, 120 Volt 9 Volt Battery Back-up - 3 Pack $239.99

$23999
current price $239.99First Alert SC9120B Direct Wire Combination Smoke and Carbon Monoxide Detector, 120 Volt 9 Volt Battery Back-up - 3 Pack
344.8 out of 5 Stars. 34 reviews
First Alert PRC710, White Battery, Photoelectric Carbon Monoxide & Smoke Combination Alarm $54.99

$5499
current price $54.99First Alert PRC710, White Battery, Photoelectric Carbon Monoxide & Smoke Combination Alarm
11 out of 5 Stars. 1 reviews
First Alert First Alert 1039871/PRC710V 1039871 Smoke and Carbon Monoxide Alarm, 85 Db, Alarm: Audible, Electrochemical, Photoelectric Sensor $53.95

$5395
current price $53.95First Alert First Alert 1039871/PRC710V 1039871 Smoke and Carbon Monoxide Alarm, 85 Db, Alarm: Audible, Electrochemical, Photoelectric Sensor
23 out of 5 Stars. 2 reviews
3V Tamper Proof Photo Electric Smoke And CO Detector Was $65.57

3V Tamper Proof Photo Electric Smoke And CO Detector
124.4 out of 5 Stars. 12 reviews
10 Year Smoke CO Alarm w Voice $53.95

$5395
current price $53.9510 Year Smoke CO Alarm w Voice
183.9 out of 5 Stars. 18 reviews
First Alert Plug-In w/Battery Back-up Electrochemical Carbon Monoxide Detector $74.97

$7497
current price $74.97First Alert Plug-In w/Battery Back-up Electrochemical Carbon Monoxide Detector
184.7 out of 5 Stars. 18 reviews
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First Alert GCO1CN Combination Explosive Gas and Carbon Monoxide Alarm with Backlit Digital Display. 10 Pack. $400.00 Was $504.50

Now$40000
current price Now $400.00, Was $504.50$504.50
First Alert GCO1CN Combination Explosive Gas and Carbon Monoxide Alarm with Backlit Digital Display. 10 Pack.
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Clearance Cevemin Portable Handheld CO2 Air Quality Detector with Temperature and Humidity Monitor - 3-in-1 Multifunctional Carbon Dioxide Tester for Home, Office, Car, RV, and Tent Use Was $29.99

Cevemin Portable Handheld CO2 Air Quality Detector with Temperature and Humidity Monitor - 3-in-1 Multifunctional Carbon Dioxide Tester for Home, Office, Car, RV, and Tent Use
First Alert BRK SCO2B Smoke and Carbon Monoxide (CO) Detector with 9V Battery

First Alert BRK SCO2B Smoke and Carbon Monoxide (CO) Detector with 9V Battery
4794.5 out of 5 Stars. 479 reviews
USI 3-in-1 Smoke, Photoelectric and Ionization Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery, 85 Decibels

USI 3-in-1 Smoke, Photoelectric and Ionization Fire and Carbon Monoxide Smart Alarm with 10 Year Sealed Battery, 85 Decibels
474.3 out of 5 Stars. 47 reviews
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Kidde Carbon Monoxide Alarm AC Powered, Plug-In with Battery Backup KN-COB-DP2 From $27.47

2 options
Available in additional 2 optionsFrom$2747
Kidde Carbon Monoxide Alarm AC Powered, Plug-In with Battery Backup KN-COB-DP2
2894.5 out of 5 Stars. 289 reviews
Kidde Carbon Monoxide Alarm AC Powered, Plug-In with Battery Backup Model KN-COB-DP2 $27.47

$2747
current price $27.47Kidde Carbon Monoxide Alarm AC Powered, Plug-In with Battery Backup Model KN-COB-DP2
Kidde C3010D Carbon Monoxide Detector, 10-Year Worry-Free DC Sealed Lithium Battery Powered w/Digital Display (21010075) $49.94

$4994
current price $49.94Kidde C3010D Carbon Monoxide Detector, 10-Year Worry-Free DC Sealed Lithium Battery Powered w/Digital Display (21010075)
793.8 out of 5 Stars. 79 reviews
Plug-In Carbon Monoxide Alarm $27.47

$2747
current price $27.47Plug-In Carbon Monoxide Alarm
Kidde Battery-Powered Electrochemical Carbon Monoxide Detector $44.44

$4444
current price $44.44Kidde Battery-Powered Electrochemical Carbon Monoxide Detector
674.1 out of 5 Stars. 67 reviews
Kidde 900-0076-01 AC Powered, Plug-In Carbon Monoxide Alarm From $42.94

2 options
Available in additional 2 optionsFrom$4294
Kidde 900-0076-01 AC Powered, Plug-In Carbon Monoxide Alarm
3934.6 out of 5 Stars. 393 reviews
Other options to consider(1)
Dual High Stability Sensors Detector Alarm with Automatic Reset Function $44.32

$4432
current price $44.32Dual High Stability Sensors Detector Alarm with Automatic Reset Function
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