Best Combination Gas & Carbon Monoxide Detectors for During Power Outages (2026)
We selected detectors that combine gas and CO sensing, include battery backup or plug-in power for outages, have strong user ratings, and offer good value across price tiers
This roundup covers combination gas and carbon monoxide detectors designed to keep monitoring during power outages, emphasizing devices with battery backup, plug-in operation, and clear alerts. Picks were chosen for their dual-sensor capability, battery-backup reliability, user feedback, and cost-to-feature balance
Top Picks
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1
Kidde Plug-in CO & explosive gas detector with battery backup
Plug-in detector for carbon monoxide and explosive gas with 9-volt battery backup and digital LED display. Provides 85-decibel alert and peak level memory; easy installation. Customers cite safety and ease of use as positives, with mixed views on gas detection reliability
- digital CO level display
- 9-volt battery backup
- integrated explosive gas detection
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2
Kidde plug-in CO and gas detector with 9V backup
A plug-in carbon monoxide and explosive gas detector with 9-volt battery backup and a digital LED display. It alerts with an 85-decibel alarm and records peak levels; some users report battery and gas detection mixed results
- digital CO level display
- 9-volt battery backup
- explosive gas alarm
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3
Combination Gas & Carbon Monoxide Detector with digital display
2-in-1 plug-in detector with CO and gas sensors and a digital display. Immediate PPM/LEL readouts and 85dB alarm; backup power via 9V battery keeps monitoring during outages. Customers note easy installation and security features, with some reporting false alarms
- 2-in-1 detector for gas and CO
- Digital display with instant readings
- Backup power feature