Best CO Smoke Detector Combos Updated February 2026
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Best CO Smoke Detector Combos
2026 Buyer's GuideUpdated February 2026
Advertiser disclosure About our rankings
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Best CO Smoke Detector Combo
1

10.0

Kidde Smoke & Carbon Monoxide Detector, AA Battery Powered, LED Warning Light Indicators, 2 Pack
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
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2K+ bought in past month
Best CO Smoke Detector Combo

10.0

1
Kidde Smoke & Carbon Monoxide Detector, AA Battery Powered, LED Warning Light Indicators, 2 Pack
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
2K+ bought in past month
Compare
Read Full Review
2

9.8

5 Packs,Smoke Detector Carbon Monoxide Detector Combo,2-in-1 Detection,85 dB Alarm,LED Indication,LCD Digital Displays,Battery ...
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
Compare

9.8

2
5 Packs,Smoke Detector Carbon Monoxide Detector Combo,2-in-1 Detection,85 dB Alarm,LED Indication,LCD Digital Displays,Battery ...
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
Compare
3

9.5

4-Pack,Smoke and Carbon Monoxide Detector,2 in 1 CO & Smoke Alarm,Carbon Monoxide Detectors,Smoke Detector,85dB in Alarm,LCD Sc...
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: Not indicated
Wi-Fi Enabled: Not indicated
Power Source: Battery
Save 24%
Compare

9.5

3
4-Pack,Smoke and Carbon Monoxide Detector,2 in 1 CO & Smoke Alarm,Carbon Monoxide Detectors,Smoke Detector,85dB in Alarm,LCD Sc...
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: Not indicated
Wi-Fi Enabled: Not indicated
Power Source: Battery
Save 24%
Compare
4

9.4

2 Packs, 2 in 1 CO & Smoke Detectors,Carbon Monoxide Detectors,Smoke Detector Battery Powered,（Include 3 * 1.5V AA Battery）,85 ...
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
Compare

9.4

4
2 Packs, 2 in 1 CO & Smoke Detectors,Carbon Monoxide Detectors,Smoke Detector Battery Powered,（Include 3 * 1.5V AA Battery）,85 ...
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
Compare
5

9.2

Kidde Hardwired Smoke & Carbon Monoxide Detector, 10-Year Battery Backup, Interconnectable LED Warning Light Indicators, 30CUA1...
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: Yes
Wi-Fi Enabled: No
Power Source: Hardwired
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9.2

5
Kidde Hardwired Smoke & Carbon Monoxide Detector, 10-Year Battery Backup, Interconnectable LED Warning Light Indicators, 30CUA1...
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: Yes
Wi-Fi Enabled: No
Power Source: Hardwired
Compare
Read Full Review
Best Value
6

9.1

10-Year Battery Smoke and Carbon Monoxide Detector 2-in-1 with Digital Display, 85dB Visual & Audible Alarm, Easy Setup for Liv...
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
Save 5%
Compare
Best Value

9.1

6
10-Year Battery Smoke and Carbon Monoxide Detector 2-in-1 with Digital Display, 85dB Visual & Audible Alarm, Easy Setup for Liv...
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
Save 5%
Compare
7

9.0

KIMROG 10-Year Sealed Battery 2-in-1 Smoke & Carbon Monoxide Detector Alarm | Home/Garage Combo CO & Smoke Alarm Detector with ...
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
10% Coupon
Compare

9.0

7
KIMROG 10-Year Sealed Battery 2-in-1 Smoke & Carbon Monoxide Detector Alarm | Home/Garage Combo CO & Smoke Alarm Detector with ...
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
10% Coupon
Compare
8

8.9

3 Packs, Smoke and CO Alarm,Smoke and Carbon Monoxide Detector,2 in 1,Smoke Detector Carbon Monoxide Detector Combo,85 db Alarm...
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
Compare

8.9

8
3 Packs, Smoke and CO Alarm,Smoke and Carbon Monoxide Detector,2 in 1,Smoke Detector Carbon Monoxide Detector Combo,85 db Alarm...
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
Compare
Premium Pick
Popular
9

8.7

Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, LED Warning Light Indicators, 2 Pack
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
Save 12%
Compare
Premium Pick
Popular

8.7

9
Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, LED Warning Light Indicators, 2 Pack
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
Save 12%
Compare
10

8.6

3 Packs Smoke and Carbon Monoxide Detector Powered by Battery,Portable Smoke Detector Carbon Monoxide Detector Combo with Large...
Detects: Smoke & carbon monoxide
Alarm: 85 dB & LED flash
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
Save 20%
Compare

8.6

10
3 Packs Smoke and Carbon Monoxide Detector Powered by Battery,Portable Smoke Detector Carbon Monoxide Detector Combo with Large...
Detects: Smoke & carbon monoxide
Alarm: 85 dB & LED flash
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
Save 20%
Compare
We also considered 2 others:

Our Top Choice

Best CO Smoke Detector Combo
1

10.0

Kidde Smoke & Carbon Monoxide Detector, AA Battery Powered, LED Warning Light Indicators, 2 Pack
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
Read Full Review
Compare
2K+ bought in past month
Best CO Smoke Detector Combo

10.0

1
Kidde Smoke & Carbon Monoxide Detector, AA Battery Powered, LED Warning Light Indicators, 2 Pack
Detects: Smoke & carbon monoxide
Alarm: 85 dB
Interconnects: No
Wi-Fi Enabled: No
Power Source: Battery
2K+ bought in past month
Compare
Read Full Review

Compare Features

Interconnects
Best CO Smoke Detector Combo
1. Kidde Smoke & Carbon Monoxide Detector (2 Pack)
KIDDE Preview KIDDE Preview
KIDDE
at Amazon
2. ARIKON Smoke & Carbon Monoxide Detector
ARIKON Preview ARIKON Preview
ARIKON
at Amazon
3. Oluncle 4-Pack Smoke and Carbon Monoxide Detector
OLUNCLE Preview OLUNCLE Preview
OLUNCLE
at Amazon
4. OLUNCLE CO & Smoke Detectors
OLUNCLE Preview OLUNCLE Preview
OLUNCLE
at Amazon
5. Kidde Hardwired Smoke & Carbon Monoxide Detector
KIDDE Preview KIDDE Preview
KIDDE
at Amazon
Best Value
6. ABORNI Battery Smoke and CO Detector
ABORNI Preview ABORNI Preview
ABORNI
at Amazon
7. KIMROG Smoke & Carbon Monoxide Detector
KIMROG Preview KIMROG Preview
KIMROG
at Amazon
8. FANSTLOYI Smoke and CO Alarms
FANSTLOYI Preview FANSTLOYI Preview
FANSTLOYI
at Amazon
Premium Pick
9. Kidde Smoke & Carbon Monoxide Detector (2 Pack)
KIDDE Preview KIDDE Preview
KIDDE
at Amazon
10. OLUNCLE Smoke and Carbon Monoxide Detector
OLUNCLE Preview OLUNCLE Preview
OLUNCLE
at Amazon
Deal
— — Save 24% — — Save 5% 10% Coupon — Save 12% Save 20%
Deal — — Save 24% — — Save 5% 10% Coupon — Save 12% Save 20%
Detects
Smoke & carbon monoxide Smoke & carbon monoxide Smoke & carbon monoxide Smoke & carbon monoxide Smoke & carbon monoxide Smoke & carbon monoxide Smoke & carbon monoxide Smoke & carbon monoxide Smoke & carbon monoxide Smoke & carbon monoxide
Detects 		Smoke & carbon monoxide Smoke & carbon monoxide Smoke & carbon monoxide Smoke & carbon monoxide Smoke & carbon monoxide Smoke & carbon monoxide Smoke & carbon monoxide Smoke & carbon monoxide Smoke & carbon monoxide Smoke & carbon monoxide
Alarm
85 dB 85 dB 85 dB 85 dB 85 dB 85 dB 85 dB 85 dB 85 dB 85 dB & LED flash
Alarm 		85 dB 85 dB 85 dB 85 dB 85 dB 85 dB 85 dB 85 dB 85 dB 85 dB & LED flash
Interconnects
No No Not indicated No Yes No No No No No
Interconnects 		No No Not indicated No Yes No No No No No
Wi-Fi Enabled
No No Not indicated No No No No No No No
Wi-Fi Enabled 		No No Not indicated No No No No No No No
Power Source
Battery Battery Battery Battery Hardwired Battery Battery Battery Battery Battery
Power Source 		Battery Battery Battery Battery Hardwired Battery Battery Battery Battery Battery

Related Categories
Smoke Detector & Carbon Monoxide Detector ComboCombo Smoke DetectorCarbon and Smoke DetectorSmoke Alarm and Carbon Monoxide DetectorSmoke and Carbon Monoxide AlarmSmoke Detector Co2 Combo
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Related Categories
Smoke Detector & Carbon Monoxide Detector ComboCombo Smoke DetectorCarbon and Smoke DetectorSmoke Alarm and Carbon Monoxide DetectorSmoke and Carbon Monoxide AlarmSmoke Detector Co2 Combo
Related Categories
Smoke Detector & Carbon Monoxide Detector ComboCombo Smoke DetectorCarbon and Smoke DetectorSmoke Alarm and Carbon Monoxide DetectorSmoke and Carbon Monoxide AlarmSmoke Detector Co2 Combo