5-in-1 Upgraded Plug in Carbon Monoxide Detector and Natural Gas Detector, KH Alert Portable Carbon Monoxide Detector & Gas Leak Detector with 9V Battery Backup, CO Detector with ¢µ & Humidity for Home CrysGuard great smelling screens lets you

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5-in-1 Upgraded Plug in Carbon Monoxide Detector and Natural Gas Detector, KH Alert Portable Carbon Monoxide Detector & Gas Leak Detector with 9V Battery Backup, CO Detector with ¢µ & Humidity for Home CrysGuard great smelling screens lets youAbout this item Upgraded 5 in 1 CO & Gas Detector Upgraded Plug in Carbon Monoxide Detector and Natural Gas Detector Built Carbon Monoxide, Natural Gas, temperature and Humidity Sensor, Sound & Brightness Control in one detector,Compact design, deliver fast, accurate detection to keep your safety. 9V Battery Backup Function A 9V battery backup can be installed to avoid the hassle of power outages.(9V Battery Not Included) Sound & Brightness 3 Level